10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

___________

Form 10-Q

x   QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2012

o   TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _____ to _____

Commission File Number 001-34000

Mission West Properties, Inc.

(Exact name of registrant as specified in its charter)

Maryland	95-2635431
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
10050 Bandley Drive Cupertino, California (Address of principal executive offices)	95014 (Zip Code)

(408) 725-0700

(Registrant's telephone number, including area code)

___________

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  xYes  oNo

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). x Yes  oNo

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer o	Accelerated filer x	Non-accelerated filer o	Smaller reporting company o
		(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).o Yes  xNo

APPLICABLE ONLY TO CORPORATE ISSUERS:

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

As of April 30, 2012, there were 22,668,020 shares of common stock outstanding, par value $.001 per share.

Mission West Properties, Inc.

FORM 10-Q

FOR THE QUARTER ENDED MARCH 31, 2012

INDEX

Part I                 Financial Information

		Page
Item 1.	Condensed Consolidated Financial Statements:
	Condensed Consolidated Balance Sheets as of March 31, 2012 (unaudited) and December 31, 2011	2
	Condensed Consolidated Statements of Operations for the three months ended March 31, 2012 and 2011 (unaudited)	3
	Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2012 and 2011 (unaudited)	4
	Notes to Condensed Consolidated Financial Statements (unaudited)	5
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	12
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	21
Item 4.	Controls and Procedures	21

Part II                 Other Information

Item 1.	Legal Proceedings	22
Item 1A.	Risk Factors	22
Item 6.	Exhibits	22
Signatures		23

Exhibits

Exhibit 10.29.7	Berg Group Promissory Note, dated April 5, 2012
Exhibit 10.9	Purchase Agreement of 5901, 5921, and 5961 Optical Court and Hellyer-Embedded & Hellyer-Piercy Land
Exhibit 31.1	Certification Pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934
Exhibit 31.2	Certification Pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934
Exhibit 31.3	Certification Pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934
Exhibit 32	Certification of CEO and CFO Pursuant to 18 U.S.C. § 1350, as Adopted Pursuant to § 906 of the Sarbanes-Oxley Act of 2002
Exhibit 101	XBRL (eXtensive Business Reporting Language). The following financial materials from Mission West Properties, Inc.’s Quarterly Report on Form 10-Q for the period ended March 31, 2012, formatted in XBRL: (i) Condensed Consolidated Balance Sheets, (ii) Condensed Consolidated Statements of Operations, (iii) Condensed Consolidated Statements of Cash Flows, and (iv) Notes to Condensed Consolidated Financial Statements.

-1-

PART I – Financial Information

Item 1.  Condensed Consolidated Financial Statements

MISSION WEST PROPERTIES, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(dollars in thousands, except share and par value amounts)

_________

	March 31, 2012			December 31, 2011
	(unaudited)
ASSETS
Investments in real estate:
Land	$	323,173		$	306,474
Buildings and improvements		757,631			745,962
Real estate related intangible assets		3,561			3,561
Total investments in properties		1,084,365			1,055,997
Accumulated depreciation and amortization		(235,204	)		(229,211	)
Assets held for sale, net of accumulated depreciation		31,804			54,361
Net investments in properties		880,965			881,147
Investment in unconsolidated joint venture		3,575			3,557
Net investments in real estate		884,540			884,704
Cash and cash equivalents		2,850			-
Deferred rent		16,449			16,650
Other assets, net		31,629			35,133
Total assets	$	935,468		$	936,487
LIABILITIES AND EQUITY
Liabilities:
Mortgage notes payable	$	327,380		$	331,166
Mortgage note payable (related parties)		6,986			7,139
Revolving line of credit		-			3,305
Interest payable		1,577			1,606
Prepaid rent and deferred revenue		11,185			5,836
Dividends and distributions payable		23,163			13,687
Accounts payable and accrued expenses		18,238			16,344
Security deposits		4,366			4,317
Total liabilities		392,895			383,400
Commitments and contingencies (Note 7)
Equity:
Stockholders’ equity:
Preferred stock, $.001 par value, 20,000,000 shares authorized,           none issued and outstanding		-			-
Common stock, $.001 par value, 200,000,000 shares authorized,           22,668,020 and 22,586,020 shares issued and outstanding           at March 31, 2012 and December 31, 2011		23			23
Additional paid-in capital		176,722			175,900
Distributions in excess of accumulated earnings		(35,104	)		(32,962	)
Total stockholders’ equity		141,641			142,961
Noncontrolling interests in operating partnerships		400,932			410,126
Total equity		542,573			553,087
Total liabilities and equity	$	935,468		$	936,487

The accompanying notes are an integral part of these condensed consolidated financial statements.

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MISSION WEST PROPERTIES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(dollars in thousands, except share and per share amounts)

(unaudited)

_________

	Three months ended March 31,
	2012			2011
Operating revenues:
Rental income	$	20,012		$	21,723
Tenant reimbursements		3,948			4,618
Other income		272			1,002
Total operating revenues		24,232			27,343
Operating expenses:
Property operating and maintenance		2,409			2,512
Real estate taxes		2,428			3,049
General and administrative		651			521
Depreciation and amortization		5,993			5,491
Total operating expenses		11,481			11,573
Operating income		12,751			15,770
Other income (expenses):
Equity in earnings (loss) of unconsolidated joint venture		114			(8	)
Interest income		93			69
Interest expense		(4,921	)		(5,279	)
Interest expense – related parties		(146	)		(147	)
Income from continuing operations		7,891			10,405
Discontinued operations:
Gain from disposal of discontinued operations		5,519			-
Loss attributable to discontinued operations		(157	)		(469	)
Net income (loss) from discontinued operations		5,362			(469	)
Net income		13,253			9,936
Net income attributable to noncontrolling interests		(10,409	)		(7,536	)
Net income available to common stockholders	$	2,844		$	2,400
Net income per common share from continuing operations:
Basic	$	0.09		$	0.11
Diluted	$	0.08		$	0.11
Net income per common share from discontinued operations:
Basic	$	0.04			-
Diluted	$	0.04			-
Net income per common share to common stockholders:
Basic	$	0.13		$	0.11
Diluted	$	0.12		$	0.11
Weighted average shares of common stock outstanding (basic)		22,637,668			22,288,103
Weighted average shares of common stock outstanding (diluted)		23,157,454			22,405,276

The accompanying notes are an integral part of these condensed consolidated financial statements.

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MISSION WEST PROPERTIES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(dollars in thousands)

(unaudited)

_________

	Three months ended March 31,
	2012			2011
Cash flows from operating activities:
Net income	$	13,253		$	9,936
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		5,991			5,827
Gain from disposal of properties classified as discontinued operations		(5,519	)		-
Equity in (earnings) loss of unconsolidated joint venture		(114	)		8
Distributions from unconsolidated joint venture		97			75
Interest earned on restricted cash		-			(17	)
Lease termination fee related to restricted cash		-			10,865
Stock-based compensation expense		1			14
Changes in operating assets and liabilities, net of liabilities assumed:
Deferred rent		201			635
Other assets		3,828			(250	)
Interest payable		(29	)		(17	)
Security deposits		49			(190	)
Prepaid rent and deferred revenue		(501	)		(1,758	)
Accounts payable and accrued expenses		478			4,335
Net cash provided by operating activities		17,735			29,463
Cash flows from investing activities:
Improvements to real estate assets		(176	)		(926	)
Net proceeds from sale of real estate		16,562			-
Purchase of real estate		(11,479	)		-
Proceeds received from note receivable		1,743			-
Net cash provided by (used in) investing activities		6,650			(926	)
Cash flows from financing activities:
Principal payments on mortgage notes payable		(3,786	)		(3,588	)
Principal payments on mortgage note payable (related parties)		(153	)		(141	)
Proceeds from note payable (related parties)		13,457			-
Payments on note payable (related parties)		(13,457	)		-
Payments on note payable		-			(10,776	)
Net repayments on revolving line of credit		(3,305	)		-
Distributions paid to noncontrolling interests		(11,355	)		(12,592	)
Dividends paid to common stockholders		(2,936	)		(3,320	)
Net cash used in financing activities		(21,535	)		(30,417	)
Net increase (decrease) in cash and cash equivalents		2,850			(1,880	)
Cash and cash equivalents, beginning of period		-			3,988
Cash and cash equivalents, end of period	$	2,850		$	2,108
Supplemental information:
Cash paid for interest	$	5,016		$	5,358
Supplemental schedule of non-cash investing and financing activities:
Debt incurred in connection with property acquisitions	$	11,479			-
Note receivable received from sale of real estate	$	18,780			-
Issuance of common stock upon conversion of O.P. units	$	821		$	1,604

The accompanying notes are an integral part of these condensed consolidated financial statements.

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MISSION WEST PROPERTIES, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(dollars in thousands, except par value and per share amounts)

(unaudited)

1.   Organization and Formation of the Company

Mission West Properties, Inc. (the “Company”) is a fully integrated, self-administered and self-managed real estate company that acquires and manages research and development (“R&D”)/office properties in the portion of the San Francisco Bay Area commonly referred to as Silicon Valley. In July 1998, the Company purchased an approximate 12.11% interest in four existing limited partnerships (referred to collectively as the “operating partnerships”) and obtained control of these partnerships by becoming the sole general partner in each one effective July 1, 1998, for financial accounting and reporting purposes. All limited partnership interests in the operating partnerships were converted into 59,479,633 operating partnership (“O.P.”) units, which represented a limited partnership ownership interest of approximately 87.89% of the operating partnerships. The operating partnerships are the vehicles through which the Company holds its real estate investments, makes real estate acquisitions, and generally conducts its business.

On December 30, 1998, the Company was reincorporated under the laws of the State of Maryland through a merger with and into Mission West Properties, Inc. Accordingly, shares of the former company, Mission West Properties, a California corporation (no par), which were outstanding at December 30, 1998, were converted into shares of common stock, $.001 par value per share, on a one-for-one basis.

In late December 2011, the Company formed two additional operating partnerships and transferred certain R&D properties from two current operating partnerships into the two new operating partnerships through two separate partnership division transactions. The two transactions changed the nominal ownership of title to certain properties but did not modify the economic interests or rights of the Company or the limited partners in the operating partnerships. The Company is the sole general partner of the two new operating partnerships. There was no issuance of common shares associated with these transactions, and the number of O.P. units issued in each of the new operating partnerships was fully offset by the cancellation of the same number O.P. units of each respective predecessor operating partnership.

As of March 31, 2012, the Company owned a controlling general partnership interest of 25.85%, 21.86%, 16.32%, 12.53%, 21.86% and 16.32% in Mission West Properties, L.P., Mission West Properties, L.P. I, Mission West Properties, L.P. II, Mission West Properties, L.P. III, Mission West Properties, L.P. IV and Mission West Properties, L.P. V, respectively, which represents a 21.50% general partnership interest in the operating partnerships, taken as a whole, on a consolidated weighted average basis. The ownership interests which the Company does not own in the operating partnerships are accounted for as noncontrolling interests. Through the operating partnerships, the Company owns interests in 111 R&D/office properties, all of which are located in the Silicon Valley.

The Company has elected to be taxed as a Real Estate Investment Trust (“REIT”) under the Internal Revenue Code of 1986, as amended. Accordingly, no provision has been made for income taxes for the three months ended March 31, 2012 and 2011.

Business Segment Information

The Company’s primary business is the ownership and management of R&D/office real estate with a geographic concentration in the Silicon Valley of the San Francisco Bay Area. Accordingly, the Company has concluded it currently has a single reportable segment for the Segment Reporting Topic of the Financial Accounting Standards Board Accounting Standards Codification (“FASB ASC”) 280 purposes.

2.   Basis of Presentation

Principles of Consolidation and Basis of Presentation

The accompanying unaudited interim condensed consolidated financial statements of the Company have been prepared in accordance with Rule 10-01 of Regulation S-X promulgated by the Securities and Exchange Commission (“SEC”) and, therefore, do not include all information and footnotes necessary for a fair presentation of financial position, results of operations and cash flows in conformity with accounting principles generally accepted in the United States of America (“GAAP”). In the opinion of the Company, however, the accompanying unaudited interim condensed consolidated financial statements contain all adjustments, consisting only of normal recurring adjustments, necessary to present fairly the Company’s consolidated financial position as of March 31, 2012, their consolidated results of operations for the three months ended March 31, 2012 and 2011, and their cash flows for the three months ended March 31, 2012 and 2011. All significant inter-company balances have been eliminated in consolidation. The condensed consolidated financial statements as of March 31, 2012, and for the three months ended March 31, 2012 and 2011, and related footnote disclosures are unaudited. The results of operations for the three months ended March 31, 2012, are not necessarily indicative of the results to be expected for the entire year.

-5-

MISSION WEST PROPERTIES, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS, CONTINUED

(dollars in thousands, except par value and per share amounts)

(unaudited)

The December 31, 2011, condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP.

The Company evaluates all joint venture arrangements for consolidation. The percentage interest in the joint venture, evaluation of control and whether a variable interest entity (“VIE”) exists are all considered in determining if the arrangement qualifies for consolidation in accordance with the Consolidation Topic of the FASB ASC 810. As of March 31, 2012, the Company had no VIE to consolidate.

Stock-Based Option Compensation Accounting

The Compensation-Stock Compensation Topic of the FASB ASC 718 addresses the accounting for stock options. It requires that the cost of all employee, director and consultant stock options, as well as other equity-based compensation arrangements, be reflected in the financial statements based on the estimated fair value of the awards. It is applicable to any award that is settled or measured in stock, including stock options, restricted stock, stock appreciation rights, stock units, and employee stock purchase plans. At March 31, 2012, the Company had one stock-based compensation plan.

The following table shows the activity and detail for the 2004 Equity Incentive Plan during the three months ended March 31, 2012.

		Weighted Average
	Options	Option Price
	Outstanding	Per Share
Balance, December 31, 2011	2,827,641	$8.54
Options granted	-	-
Options exercised	-	-
Options expired	-	-
Balance, March 31, 2012	2,827,641	$8.54

The Company measures compensation cost for its stock options at fair value on the date of grant and recognizes compensation expense relating to the remaining unvested portion of outstanding stock options at the time of adoption ratably over the vesting period, generally four years. The fair value of the Company’s stock options is determined using the Black-Scholes option pricing model. Compensation expense related to the Company’s share-based awards is included in general and administrative expenses in the Company’s accompanying condensed consolidated statements of operations. Under the Compensation-Stock Compensation Topic of the FASB ASC 718, the Company recorded approximately $1 and $14 of expense for share-based compensation relating to grants of stock options for the three months ended March 31, 2012 and 2011, respectively.

Noncontrolling Interests

The noncontrolling interest provisions of the Consolidation Topic of the FASB ASC 810 clarifies that a noncontrolling interest in a subsidiary is an ownership interest in a consolidated entity, which should be reported as equity in the parent’s consolidated financial statements. It requires disclosure, on the face of the consolidated statement of operations, of those amounts of consolidated net income and other comprehensive other income attributable to controlling and noncontrolling interests, eliminating the past practice of reporting amounts of income attributable to noncontrolling interests as an adjustment in arriving at consolidated net income.

The following table presents a reconciliation of the December 31, 2011 and March 31, 2012, carrying amounts for equity and the related amounts of equity attributable to stockholders’ equity and noncontrolling interests:

	Equity
	Common Stock		Additional Paid-in Capital		Distributions in Excess of Accumulated Earnings			Noncontrolling Interests			Total
	(dollars in thousands)
Balance, December 31, 2011	$	23	$	175,900	$	(32,962	)	$	410,126		$	553,087
Net income		-		-		2,844			10,409			13,253
Amortization of previously granted share awards		-		1		-			-			1
Conversions of operating partnership units		-		821		-			(821	)		-
Dividends and distributions		-		-		(4,986	)		(18,782	)		(23,768	)
Balance, March 31, 2012	$	23	$	176,722	$	(35,104	)	$	400,932		$	542,573

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MISSION WEST PROPERTIES, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS, CONTINUED

(dollars in thousands, except par value and per share amounts)

(unaudited)

Noncontrolling interests represent the aggregate partnership interest in the operating partnership held by the operating partnership limited partner unit holders. Income allocated to noncontrolling interests is based on the unit holders’ ownership percentage of the operating partnership. Because an O.P. unit is generally redeemable for cash or a share of common stock at the option of the Company, it is deemed to be equivalent to a share of common stock. Therefore, such transactions are treated as capital transactions and result in an allocation between stockholders’ equity and noncontrolling interests in the accompanying condensed consolidated balance sheets to account for the change in the ownership of the underlying equity in the operating partnerships. The Company’s noncontrolling interests represent the separate private ownership of the operating partnerships by the Berg Group (defined as Carl E. Berg, his brother Clyde J. Berg, members of their respective immediate families, and certain entities they control) and other non-affiliate interests. As of March 31, 2012, these interests accounted for approximately 78.50% of the ownership interests in the real estate operations of the Company on a consolidated weighted average basis.

The amount of noncontrolling interests in net income is calculated by taking the net income of the operating partnerships (on a stand-alone basis) multiplied by the respective weighted average noncontrolling interests’ ownership percentage.

Allocation of corporate general and administrative expenses to the operating partnerships is performed based upon shares and O. P. units outstanding for each operating partnership in relation to the total for all six operating partnerships.

Reclassifications

Certain reclassifications have been made to the previously reported 2011 condensed consolidated financial statements in order to conform to the 2012 presentation.

The following notes highlight significant changes to the notes to the Company’s December 31, 2011, audited consolidated financial statements and should be read together with the consolidated financial statements and notes thereto included in the Company’s 2011 Annual Report on Form 10-K filed on March 15, 2012.

Subsequent Events

The Company has evaluated subsequent events through the date the consolidated financial statements were issued.

3.   Real Estate

Property Acquisition

On February 1, 2012, the Company acquired three vacant R&D buildings consisting of approximately 202,500 rentable square feet located at 5901, 5921 and 5961 Optical Court in San Jose, California, from the Berg Group for a total purchase price of $18,000. The Company also acquired approximately ten acres of raw land at Hellyer Avenue and Embedded Way for approximately $5,313 and nine acres of raw land at Hellyer Avenue and Piercy Road for approximately $4,877 from the Berg Group. The combined purchase price for the three R&D buildings and raw land totaled approximately $28,190. The Company acquired these properties by offsetting the purchase price with approximately $9,217, the amount the Berg Group owed to the Company from the outcome of the Hellyer Avenue Limited Partnership litigation and approximately $7,494, the amount the Berg Group was obligated to pay toward the construction of an R&D building in connection with the Company’s 2001 acquisition of 245 Caspian Drive in Sunnyvale, California. The Company issued an unsecured short-term note payable for the remaining amount of approximately $11,479 with an interest rate of LIBOR plus 1.75%, which is due July 15, 2012, with an option to extend another six months. As of March 31, 2012, the note payable and accrued interest had been fully repaid.

The purchase price allocation for this acquisition was determined in accordance with the principles under the Business Combinations Topic of the FASB ASC 805.

Property Disposition

On January 9, 2012, the Company disposed of three vacant R&D buildings consisting of approximately 165,000 rentable square feet located at 1680-1690 McCandless Drive, 1740-1768 McCandless Drive and 1810-1830 McCandless Drive in Milpitas, California. A total net gain of approximately $7,479 will be recognized in installments and classified as discontinued operations on the total sales price of $21,780. For the quarter ended March 31, 2012, approximately $1,629 was recognized as gain and classified as discontinued operations on sale of real estate under the installment method. The buyer issued an unsecured promissory note to the Company for the principal amount of $18,780 with an interest rate of 0% per annum. The total sales price encompasses the sum of the following amounts: a) The down payment price of $3,000; b) Yearly payments of $3,000 on the anniversary of the effective date for four years; and c) On the fifth year anniversary of the effective date, the buyer will pay the remaining balance of the total sales price, contingent that the buyer receives the park in lieu fees. If the buyer has not received park in lieu fees by the fifth year anniversary of the effective date, both buyer and seller can negotiate to extend the term of the note.

-7-

On February 14, 2012, the Company completed the sale of three R&D buildings consisting of approximately 112,000 rentable square feet located at 1625-1657 McCandless Drive, 1725-1745 McCandless Drive and 1815-1845 McCandless Drive in Milpitas, California. The property at 1815-1845 McCandless Drive represented approximately 36.04% of all of the R&D properties at this address. The remaining 63.96% will be sold in the second phase at a later date to the same buyer. On the total cash sales price of approximately $13,613, the Company recognizeda gain of approximately $3,890 and classified it as a gain from disposal of discontinued operations.

4.   Stock Transactions

During the three months ended March 31, 2012, two limited partners exchanged a total of 82,000 O.P. units for 82,000 shares of the Company’s common stock under the terms of the Exchange Rights Agreement among the Company and all limited partners of the operating partnerships resulting in a reclassification of approximately $821 from noncontrolling interests to stockholders’ equity. Neither the Company nor the operating partnerships received any proceeds from the issuance of the common stock in exchange for O.P. units. Under the limited partnership agreements, each exchange is treated as the purchase of additional O.P. units of the general partner interest by the Company in exchange for stock, and the contribution of additional capital to the partnership by the Company equal in amount to the value of the stock issued in exchange for the limited partnership interests.

5.   Net Income Per Share

Basic net income available to common stockholders per share is computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding for the period. Net income available to common stockholders is calculated by taking total net income and deducting the net income attributable to noncontrolling interests in each of the underlining operating partnerships. Diluted net income available to common stockholders per share is computed by dividing net income available to common stockholders by the sum of the weighted-average number of common shares outstanding for the period plus the assumed exercise of all dilutive securities using the treasury stock method.

The computation for weighted average shares is detailed below:

	Three Months Ended March 31,
	2012	2011
Weighted average shares outstanding (basic)	22,637,668	22,288,103
Incremental shares from assumed option exercise	519,786	117,173
Weighted average shares outstanding (diluted)	23,157,454	22,405,276

At March 31, 2012, outstanding options to purchase 702,500 shares of common stock were excluded from the computation of diluted net income available to common stockholders per share under the treasury stock method for the three months ended March 31, 2012, because the option exercise price was greater than the weighted average closing price of the Company’s common stock during the period. The outstanding O.P. units which are exchangeable at the unit holder’s option, subject to certain restrictions on conversions, for shares of common stock on a one-for-one basis have been excluded from the diluted net income per share calculation. The total number of O.P. units outstanding at March 31, 2012 and 2011, was 82,618,015 and 82,915,265, respectively.

6.   Related Party Transactions

As of March 31, 2012, the Berg Group owned 75,769,684 O.P. units. The Berg Group’s combined ownership of O.P. units and shares of common stock as of March 31, 2012, represented approximately 74% of the total equity interests, assuming conversion of all O.P. units outstanding into the Company’s common stock.

As of March 31, 2012, debt in the amount of approximately $6,986 was due the Berg Group under a mortgage note established May 15, 2000, in connection with the acquisition of a 50% interest in Hellyer Avenue Limited Partnership, the obligor under the mortgage note. The mortgage note bears interest at 7.65% and principal payments are amortized over 20 years. Interest expense incurred in connection with the mortgage note was approximately $136 and $146 for the three months ended March 31, 2012 and 2011, respectively.

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MISSION WEST PROPERTIES, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS, CONTINUED

(dollars in thousands, except par value and per share amounts)

(unaudited)

In September 2009, the superior court issued a final decision in the Mission West Properties, L.P. v. Republic Properties Corporation litigation (the “Republic Litigation”) and entry of judgment in favor of Republic Properties Corporation (“RPC”) that RPC is and at all times was a partner in Hellyer Avenue Limited Partnership (“Hellyer LP”) and was entitled to receive all past distributions from profits that were paid to Berg & Berg Enterprises, Inc. (“BBE”) plus accrued interest. The Company filed an appeal. In October 2009, the Company deposited with the clerk of the Santa Clara County Superior Court a check in the amount of approximately $13,975. Of this amount, $9,317 represented the amount owed to RPC and $4,658 million represented a deposit to appeal the court’s final decision in the litigation. The Company accrued approximately $4,389 in interest expense since September 2009 on the amount of past distributions that would be payable to RPC by Hellyer LP based on the amount of the judgment at the legal rate of interest of 10%.  In addition, because RPC’s interest in the Hellyer LP was transferred to BBE and past distributions from profits were paid to BBE, the Company accrued approximately $1,300 in interest receivable due from BBE. The $1,300 interest income accrual was calculated at an interest rate of LIBOR plus 1.25%. The Company’s appeal was unsuccessful, and in December 2011, the Company finalized the details with its legal counsel to arrange for the transfer of funds held by the California Superior Court to pay off the judgment plus accrued interest, and coordinate with the Independent Directors Committee of the Board of Directors and BBE on the transfer of the former RPC interest from BBE to RPC. The amount of approximately $9,217, consisting of the aggregate distributions and accrued interest, is owed by BBE to the Company. In February 2012, the $9,217 owed by the Berg Group was applied towards the purchase price for properties acquired from the Berg Group. See Note 3, “Real Estate” above for details of the acquisitions.

As disclosed under Note 3, “Real Estate,” on February 1, 2012, the Company acquired three vacant R&D buildings located at 5901, 5921 and 5961 Optical Court in San Jose, California, from the Berg Group consisting of approximately 202,500 rentable square feet for a total purchase price of $18,000. The Company also acquired approximately ten acres of raw land at Hellyer Avenue and Embedded Way for approximately $5,313 and nine acres of raw land at Hellyer Avenue and Piercy Road for approximately $4,877 from the Berg Group. The combined purchase price for the three R&D buildings and raw land totaled approximately $28,190. The Company acquired these properties by offsetting the purchase price by approximately $9,217, the amount of the prior distributions received by BBE that had been paid to RPC by the Company and accrued interest pursuant to the judgment in the Republic Litigation, and approximately $7,494, the amount the Berg Group was obligated to pay toward the construction of an R&D building in connection with the Company’s 2001 acquisition of 245 Caspian Drive in Sunnyvale, California. The Company issued an unsecured short-term note payable in the principal amount of approximately $11,479 representing the remaining portion of the purchase price. The note had an interest rate of LIBOR plus 1.75%, and matures July 15, 2012. The Company paid the note in full in March 2012. Total interest expense on the note was approximately $9 for the three months ended March 31, 2012. The transaction was approved by the Independent Directors Committee of the Company’s Board of Directors.

During the first three months of 2012, the Company issued two short-term notes payable to the Berg Group in connection with property acquisitions and quarterly dividend distributions. The interest rate on the two notes was LIBOR plus 1.75%. The aggregate loan amount totaled approximately $13,446. The Company repaid approximately $13,457 to the Berg Group, which included accrued interest. For the three months ended March 31, 2012, interest expense incurred in connection with those short-term notes payable was approximately $11.

During the first three months of 2012 and 2011, Carl E. Berg or entities controlled by him held financial interests in several companies that lease space from the operating partnerships, which include companies where Mr. Berg has a greater than 10% ownership interest. These related tenants contributed approximately $424 and $256 in rental income for the three months ended March 31, 2012 and 2011, respectively.

Under the Company’s charter, bylaws and agreements with the Berg Group, the individual members of the Berg Group are prohibited from acquiring or holding shares of the Company’s common stock if such acquisition would result in their beneficial ownership percentage of the Company’s common stock causing the Company to violate any REIT qualification requirement. Currently their share ownership is below a level at which rent from related tenants would be excluded in determining compliance with REIT qualification tests.

Until February 2012, the Berg Group had an obligation to pay approximately $7,494 toward the construction of  an approximately 75,000 to 90,000 square foot building in connection with the Company’s 2001 acquisition of 245 Caspian in Sunnyvale, which consists of approximately three acres of unimproved land. In connection with the Company’s multiple property acquisitions from the Berg Group on February 1, 2012, that obligation was applied to partially offset the purchase price, as described above.

The Company currently leases office space owned by Berg & Berg Enterprises for the Company’s headquarters. Rental amounts and overhead reimbursements paid to Berg & Berg Enterprises were $30 for the three months ended March 31, 2012 and 2011.

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MISSION WEST PROPERTIES, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS, CONTINUED

(dollars in thousands, except par value and per share amounts)

(unaudited)

7.   Commitments and Contingencies

From time to time, the Company is engaged in legal proceedings arising in the ordinary course of business. The Company does not expect any of such proceedings to have a material adverse effect on its cash flows, financial condition or results of operations. The Company is currently involved in the following legal proceeding, which it believes will not have a material adverse effect on its operating results, cash flows or financial condition.

Guarantees and Indemnities

Under its articles of incorporation and bylaws, the Company has agreed to indemnify its officers and directors for certain events or occurrences arising as a result of the officer’s or director’s serving in such capacity. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited. The Company believes the estimated fair value of its obligations under these indemnification agreements is minimal and has recorded no liabilities for these agreements as of March 31, 2012.

The Company also enters into agreements with other companies in the ordinary course of business, typically lenders, joint venture partners, contractors, and tenants that contain indemnification provisions. Under these provisions the Company typically agrees to indemnify and hold harmless the indemnified party for losses suffered or incurred by the indemnified party as a result of certain kinds of activities or inactions of the Company. These indemnification provisions generally survive termination of the underlying agreement. The maximum potential amount of future payments the Company could be required to make under these indemnification provisions is unlimited. To date, the Company has not incurred material costs to defend lawsuits or settle claims related to these indemnification agreements. As a result, the Company believes the estimated fair value of these agreements is minimal. Accordingly, the Company has recorded no liabilities for these agreements as of March 31, 2012.

Seismic Activity

The Company’s properties are located in an active seismic area of Silicon Valley. Insurance policies currently maintained by the Company do not cover seismic activity, although they do cover losses from fires after an earthquake.

Environmental Issues

The environmental investigations that have been conducted on the Company’s properties have not revealed any environmental liability that the Company believes would have a material adverse effect on its financial condition, results of operations and assets, and the Company is not aware of any such liability. Nonetheless, it is possible that there are material environmental liabilities of which the Company is unaware. In addition, the Company cannot assure that future laws, ordinances, or regulations will not impose any material environmental liability, or that the current environmental condition of the properties has not been, or will not be, affected by tenants and occupants of the properties, by the condition of properties in the vicinity of the properties, or by third parties unrelated to the Company.

8.   Real Estate Assets Held for Sale/Discontinued Operations

The real estate sales provisions of the Property, Plant, and Equipment Topic of the FASB ASC 360 address financial accounting and reporting for the impairment and disposal of long lived assets. In general, income or loss attributable to the operations and sale of property and the operations related to property held for sale is classified as discontinued operations in the condensed consolidated statements of operations. Prior period condensed consolidated statements of operations presented in this report have been reclassified to reflect the income or loss related to properties that were sold and properties that were under contract to be sold and presented as discontinued operations in 2012. All periods presented in this report will likely require further reclassification in future periods if there are properties held for sale or if property sales occur.

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MISSION WEST PROPERTIES, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS, CONTINUED

(dollars in thousands, except par value and per share amounts)

(unaudited)

As of March 31, 2012, there were eight vacant properties under contract to be sold or otherwise disposed of which would qualify as assets held for sale and presented as discontinued operations. In addition, the Company sold six vacant properties in the first quarter of 2012, which had previously been recorded as assets held for sale and qualified as discontinued operations. In the fourth quarter of 2011, the Company sold one vacant R&D building which qualified as discontinued operations. Condensed results of operations for these properties for the three months ended March 31, 2012 and 2011, are as follows:

	Three Months Ended March 31,
	2012			2011
	(dollars in thousands)
	(unaudited)
Operating revenues:
Rental income	$	7		$	54
Tenant reimbursements		-			26
Other income		2			99
Total operating revenues		9			179
Operating expenses:
Property operating, maintenance and real estate taxes		166			312
Depreciation and amortization		-			336
Total operating expenses		166			648
Net loss attributable to discontinued operations		(157	)		(469	)
Net gain from disposal of discontinued operations		5,519			-
Income (loss) from discontinued operations	$	5,362		$	(469	)

9.   Subsequent Events

On March 19, 2012, the Company declared dividends for the first quarter 2012. On April 5, 2012, the Company paid dividends of $0.22 per share of common stock to all common stockholders of record as of March 30, 2012. A portion of the total dividend in the amount of $0.13 per share represented payment of the regular quarterly dividend and the remaining $0.09 per share represented an additional special dividend payment. On the same date, the operating partnerships paid a distribution of $0.22 per O.P. unit to all O.P. unit holders. Aggregate dividends and distributions amounted to approximately $23,163.

On April 30, 2012, the Company completed the sale of four R&D buildings consisting of approximately 145,000 rentable square feet located at 1490-1520 McCandless Drive, 1525-1555 McCandless Drive, 1575-1595 McCandless Drive and 1600 McCandless Drive in Milpitas, California. On the total cash sales price of $19,350, the Company will recognizea gain of approximately $8,697 and classify it as a gain from disposal of discontinued operations.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

This Management’s Discussion and Analysis of Financial Condition and Results of Operations should be read in conjunction with the accompanying condensed consolidated financial statements and notes thereto under Part I, Item 1 of this Report and our audited consolidated financial statements and notes thereto contained in our Annual Report on Form 10-K as of and for the year ended December 31, 2011. The results for the three months ended March 31, 2012, are not necessarily indicative of the results to be expected for the entire fiscal year ending December 31, 2012.

Forward-Looking Information

This quarterly report on Form 10-Q contains forward-looking statements within the meaning of the federal securities laws. We intend such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements contained in the Private Securities Reform Act of 1995, and are including this statement for purposes of complying with these safe harbor provisions. Forward-looking statements, which are based on certain assumptions and describe future plans, strategies and expectations of the Company, are generally identifiable by use of the words "believe," "expect," "intend," "anticipate," "estimate," "project" or similar expressions. Additionally, all disclosures under Part I, Item 3 constitute forward-looking statements. Our ability to predict results or the actual effect of future plans or strategies is inherently uncertain.

Factors that could have a material adverse effect on our operations and future prospects or would cause actual results in the future to differ materially from any of our forward-looking statements include, but are not limited to, the following:

·   the current turmoil in the credit markets could limit the demands for R&D space and affect the overall availability and cost of credit,

·   economic conditions generally and the real estate market specifically,

·   the occupancy rates of the properties,

·   rental rates on new and renewed leases,

·   legislative or regulatory provisions (including changes to laws governing the taxation of REITs),

·   availability of capital,

·   interest rates,

·   competition,

·   supply of and demand for R&D, office and industrial properties in our current and proposed market areas,

·   tenant defaults and bankruptcies,

·   lease term expirations and renewals,

·   changes in general accounting principles, policies and guidelines applicable to REITs, and

·   ability to timely refinance maturing debt obligations and the terms of any such refinancing.

These risks and uncertainties, together with the other risks described under Part I, Item 1A - “Risk Factors” of our 2011 Annual Report on Form 10-K and from time to time in our other reports and documents filed with the Securities and Exchange Commission (“SEC”), should be considered in evaluating forward-looking statements and undue reliance should not be placed on such statements.

Overview

We acquire, market, lease, and manage R&D/office properties, primarily located in the Silicon Valley portion of the San Francisco Bay Area. As of March 31, 2012, we owned and managed 111 properties totaling approximately 8.0 million rentable square feet through six limited partnerships, or operating partnerships, for which we are the sole general partner. This class of property is designed for research and development and office uses and, in some cases, includes space for light manufacturing operations with loading docks. We believe that we have one of the largest portfolios of R&D/office properties in the Silicon Valley. As of March 31, 2012, two tenants individually leased in excess of 300,000 rentable square feet from us: Microsoft Corporation and Apple, Inc.

The Microsoft lease expires in August 2014 with two separate options to extend the lease for two successive additional periods of five years commencing on the expiration of the initial lease term upon the same terms and conditions of the initial lease term except that base rent for each option shall be determined at 95% of the fair market rent for the option term with annual increases in base rent.

We have five leases with Apple for multiple properties: two leases expiring in 2014, one lease expiring in 2018, and two leases expiring in 2022. These leases have a range of one to three separate options to extend the lease for successive additional periods of three to five years commencing on the expiration of the initial lease term upon the same terms and conditions of the initial lease term except that base rent for each option shall be determined at 95% of the fair market rent for the option term with annual increases in base rent.

For federal income tax purposes, we have operated as a self-managed, self-administered and fully integrated real estate investment trust (“REIT”) since the beginning of fiscal 1999.

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Our acquisition, growth and operating strategy incorporates the following elements:

·   capitalizing on opportunistic acquisitions from third parties of high-quality R&D/office properties that provide attractive initial yields and significant potential for growth in cash-flow;

·   focusing on general purpose, single-tenant Silicon Valley R&D/office properties for information technology companies in order to maintain low operating costs, reduce tenant turnover and capitalize on our relationships with these companies and our extensive knowledge of their real estate needs; and

·   maintaining prudent financial management principles that emphasize current cash flow while building long-term value, the acquisition of pre-leased properties to reduce development and leasing risks and the maintenance of sufficient liquidity to acquire and finance properties on desirable terms.

Company Sale Status

In late December 2011, we reported that we were exploring strategic alternatives for the possible sale of the Company and that our board of directors had authorized management to initiate a process to identify potential qualified buyers and determine an appropriate structure for the sale of the Company taking into account the potential value of the transaction to stockholders and operating unit holders. We conducted a broad-based marketing effort and currently are still reviewing proposals from potential qualified buyers. At this time, however, we are not engaged in any transaction, and our board of directors has not made a decision to recommend or authorize a sale of the Company.

Current Economic Environment

All of our properties are located in the Northern California area known as the Silicon Valley, which generally consists of portions of Santa Clara County, Southwestern Alameda County, Southeastern San Mateo County and Eastern Santa Cruz County. Historically, the Silicon Valley R&D property market has fluctuated with the local economy. The Silicon Valley economy and business activity slowed markedly from 2001 through 2006 and grew slowly until the second half of 2008. Since September 2008, the impact of the worldwide recession has adversely affected the local economy, but less so than other regions of California. Data suggests that the Silicon Valley economy in particular has picked up this year. While this is generally beneficial, we do not expect a significant positive effect on our leasing activities. According to a recent report by Cassidy Turley Real Estate (the “CT Report”), which we consider to be a useful publicly available source of relevant market data, the vacancy rate for Silicon Valley R&D property was approximately 15.8% in late 2011 and 15.0% at the end of the first quarter of 2012. Total direct vacant R&D square footage in the Silicon Valley at the end of the first quarter of 2012 amounted to approximately 23.3 million square feet and sublet vacant was approximately 2.1 million square feet. According to the CT Report, total positive net absorption (which is the computation of gross square footage leased less gross new square footage vacated for the period presented) in 2011 amounted to approximately 4.0 million square feet, and in the first three months of 2012 there was total positive net absorption of approximately 0.7 million square feet. Also according to the CT Report, the average asking market rent per square foot at the end of the first quarter of 2012 was $1.18 per month compared with $1.15 per month in late 2011. The Silicon Valley R&D property market is characterized by a substantial number of submarkets, with rent and vacancy rates varying by submarket and location within each submarket. Individual properties within any particular submarket presently may be leased above or below the current average asking market rental rates within that submarket and the region as a whole. Notwithstanding the improving local economic conditions, due to the substantial overhang of vacant R&D properties throughout the Silicon Valley, we believe that we are unlikely to see a sustainable recovery in the leasing market for our properties prior to 2013.

Our occupancy rate at March 31, 2012, was 71.3% compared with 68.5% at March 31, 2011. Most of the occupancy improvement was attributable to vacant property dispositions and vacant properties classified as assets held for sale and were not included in the vacancy statistic. We believe that our occupancy rate could decline if key tenants seek the protection of bankruptcy laws, consolidate operations or discontinue operations. In addition, excluding 88,000 rentable square feet of properties subject to a month-to-month lease, leases with respect to approximately 209,000 rentable square feet are scheduled to expire during the remainder of 2012 and approximately 368,000 rentable square feet are scheduled to expire in 2013. The properties subject to these leases may take anywhere from 24 to 40 months or longer to re-lease. If we fail to re-lease a substantial portion of this square footage, our operating results and cash flows are likely to be affected adversely. We believe that the average 2012 renewal rental rates for our properties will be approximately equal to, greater than, or perhaps, below current market rents, but we cannot give any assurance that leases will be renewed or that available space will be re-leased at rental rates equal to or above the current quoted market rates. At this time, we estimate that 60% of the rentable square feet scheduled to expire in the remainder of 2012 and 75% of the rentable square feet scheduled to expire in 2013 will be renewed, however, we cannot give any assurances that we will renew the expiring leases at that rate.

In the first quarter 2012, we signed two lease renewals for approximately 65,000 rentable square feet with a weighted average effective rent of $0.58 per square foot. There were no tenant improvement costs or leasing commissions related to these leases. We lost approximately 6,000 rentable square feet due to one expired lease in the first quarter 2012.

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Despite our strategic focus on single tenant properties and leases, in order to meet market conditions, we have been, and expect to continue leasing less than the entire premises of some of our R&D properties to a single tenant from time to time. Leasing our R&D properties, which generally have been built for single tenant occupancy, to multiple tenants can increase our leasing costs and operating expenses and reduce the profitability of our leasing activities.

If we are unable to lease a significant portion of any vacant space or space subject to expiring leases; if we experience significant tenant defaults as a result of the current economic downturn; if we are not able to lease space at or above current market rates; if we restructure existing leases and lower existing rents in order to retain tenants for an extended term; or if we increase our lease costs and operating expenses substantially to accommodate multiple tenants in our R&D properties, our results of operations and cash flows will be affected adversely. Furthermore, in this event it is probable that our board of directors will reduce the quarterly dividend on the outstanding common stock and the O.P. units. Our operating results and ability to pay dividends at current levels remain subject to a number of material risks, as indicated under the caption “Forward-Looking Information” above and in the section entitled “Risk Factors” in our most recent annual report on Form 10-K.

Critical Accounting Policies and Estimates

We prepare the condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”), which requires us to make certain estimates, judgments and assumptions that affect the reported amounts in the accompanying condensed consolidated financial statements, disclosure of contingent assets and liabilities and related footnotes. Accounting and disclosure decisions with respect to material transactions that are subject to significant management judgments or estimates include impairment of long lived assets, deferred rent reserves, and allocation of purchase price relating to property acquisitions and the related depreciable lives assigned. Actual results may differ from these estimates under different assumptions or conditions.

Critical accounting policies are defined as those that require management to make estimates, judgments and assumptions, giving due consideration to materiality, in certain circumstances that affect amounts reported in the condensed consolidated financial statements, and potentially result in materially different results under different conditions and assumptions. We based these estimates and assumptions on historical experience and evaluate them on an on-going basis to help ensure they remain reasonable under current conditions. Actual results could differ from those estimates. During the three months ended March 31, 2012, there were no significant changes to the critical accounting policies and estimates discussed in the Company’s 2011 annual report on Form 10-K.

Results of Operations

Comparison of the three months ended March 31, 2012 with the three months ended March 31, 2011

As of March 31, 2012 and 2011, through our controlling interests in the operating partnerships, we owned 111 properties totaling approximately 8.0 million rentable square feet.

Comparison of rental income from real estate for the three months ended March 31, 2012 and 2011 is as follows:

	Three Months Ended March 31,
	2012	2011	$ Change	% Change by Property Group
	(dollars in thousands)
Same Property (1)	$20,012	$21,723	($1,711)	(7.9%)
2012 Acquisitions	-	-	-	-
Total	$20,012	$21,723	($1,711)	(7.9%)

(1)   “Same Property” is defined as properties owned by us prior to 2011 that we still owned as of March 31, 2012. There were 108 properties classified as “same property” as of March 31, 2012.

Rental Income from Real Estate Operations

For the quarter ended March 31, 2012, rental income from real estate decreased by approximately ($1.7) million, or (7.9%), from $21.7 million for the three months ended March 31, 2011, to $20.0 million for the three months ended March 31, 2012. The decrease resulted primarily from a one-time rent adjustment of approximately $1.6 million from a tenant dispute resolution in 2011 that did not recur in 2012. Our occupancy rate at March 31, 2012, was approximately 71.3%, compared with 68.5% at March 31, 2011. We acquired three new vacant properties in the first three months of 2012. Most of the occupancy improvement was attributable to vacant property dispositions and vacant properties classified as assets held for sale and were not included in the vacancy statistic.

Other Income

Other income of approximately $0.3 million for the three months ended March 31, 2012, was from management fees. Other income of approximately $1.0 million for the three months ended March 31, 2011, included approximately $0.7 million from an incentive to lessee adjustment and $0.3 million from management fees.

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Operating Expenses and Tenant Reimbursements

Property operating expenses, maintenance and real estate taxes during the first quarter 2012 decreased by approximately ($0.7) million, or (13.0%), from $5.5 million to $4.8 million for the three months ended March 31, 2011 and 2012, respectively. We received approximately $0.5 million from real estate tax refund for the quarter ended March 31, 2012. Tenant reimbursements decreased by approximately ($0.7) million, or (14.5%), from $4.6 million for the three months ended March 31, 2011 to $3.9 million for the three months ended March 31, 2012. There were approximately $0.5 million refunds to tenants relating to annual common area charges reconciliation in 2012. The level of tenant reimbursements is affected by vacancies because certain recurring expenses such as property insurance, real estate taxes, and other fixed operating expenses are not recoverable from vacant properties.

General and administrative expenses increased by approximately $0.1 million, or 25.0%, from $0.5 million to $0.6 million for the three months ended March 31, 2011 and 2012, respectively. The increase in general and administrative expenses was primarily a result of expenses related to the evaluation of strategic alternative for the sale of Company.

Real estate depreciation and amortization expense increased by approximately $0.5 million, or 9.1%, from $5.5 million to $6.0 million for the three months ended March 31, 2011 and 2012, respectively. The increase was primarily the result of recognizing the amortization expense of in-place leases in connection with a property acquisition in the third quarter 2011 pursuant to FASB ASC 805, Business Combinations, and three property acquisitions in the first quarter 2012.

Equity in Earnings from Unconsolidated Joint Venture

As of March 31, 2012, we held an investment in one R&D building totaling approximately 155,500 rentable square feet through an unconsolidated joint venture, TBI-MWP, in which we acquired a 50% interest from the Berg Group in January 2003. We have a non-controlling limited partnership interest in this joint venture, which we account for using the equity method of accounting. For the three months ended March 31, 2012, we recorded equity in earnings from the unconsolidated joint venture of approximately $0.1 million compared with equity in loss of ($0.009) million for the same period in 2011. The occupancy rate for the property owned by this joint venture at March 31, 2012 and 2011, was 100%. The increase resulted primarily from higher revenues and lower operating expenses in 2012 compare to 2011.

Interest Income

Interest income for the three months ended March 31, 2012 and 2011, was $0.09 million and $0.07, respectively.

Interest Expense

Interest expense decreased by approximately ($0.4) million, or (6.8%), from $5.3 million for the three months ended March 31, 2011, to $4.9 million for the three months ended March 31, 2012. Interest expense (related parties) remained relatively the same at approximately $0.1 million for the three months ended March 31, 2012 and 2011. Total debt outstanding, including debt due related parties, decreased by approximately ($15.4) million, or (4.4%), from $349.8 million as of March 31, 2011, to $334.4 million as of March 31, 2012, because of recurring scheduled debt payments.

Income (Loss) from Discontinued Operations

In accordance with the provisions of the Property, Plant, and Equipment Topic of the FASB ASC 360, in the first quarter of 2012 we classified eight vacant R&D properties as assets held for sale and discontinued operations because they will be sold within one year. Also in the first quarter of 2012, we sold six vacant R&D properties and classified them as discontinued operations. The income (loss) attributable to discontinued operations from these properties for the three months ended March 31, 2012 and 2011, was approximately $5.4 million and ($0.5) million, respectively.

Net Income Available to Common Stockholders and Net Income Attributable to Noncontrolling Interests

Net income available to common stockholders increased by approximately $0.4 million, or 18.5%, from $2.4 million for the three months ended March 31, 2011, to $2.8 million for the three months ended March 31, 2012. Net income attributable to noncontrolling interests increased by approximately $2.9 million, or 38.1%, from $7.5 million for the three months ended March 31, 2011, to $10.4 million for the three months ended March 31, 2012.

The amount of net income attributable to noncontrolling interests has been calculated by multiplying the net income of the operating partnerships (on a stand-alone basis) by the respective noncontrolling interests ownership percentage. Noncontrolling interests represent the ownership interest of all limited partners in the operating partnerships taken as a whole, which was approximately 78% and 79% as of March 31, 2012 and 2011, respectively. The increase in net income attributable to noncontrolling interests in the first three months of 2012 occurred solely as a result of the increase in our net income for the period.

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Changes in Financial Condition

The most significant changes in our financial condition during the three months ended March 31, 2012, resulted from R&D property transactions.  We acquired three vacant R&D buildings consisting of approximately 202,500 rentable square feet and approximately 19 acres of raw land located in the Silicon Valley for approximately $28.2 million. We disposed of six vacant R&D buildings consisting of approximately 277,000 rentable square feet for approximately $35.4 million.

Total stockholders’ equity, net, decreased by approximately ($1.3) million from December 31, 2011. We obtained additional capital from the issuance of 82,000 shares of our common stock for the exchange of O.P. units, which increased additional paid-in capital by approximately $0.8 million. Distributions to common stockholders in excess of accumulated earnings increased during the most recent quarter by approximately ($2.1) million.

Liquidity and Capital Resources

In 2012, we anticipate operating cash flows from our operating property portfolio to decrease compared with 2011, because we continue to experience weak demand for our R&D properties in certain areas of the Silicon Valley. If we are unable to lease a significant portion of the approximately 209,000 rentable square feet scheduled to expire during the remainder of 2012, 368,000 rentable square feet scheduled to expire in 2013 or an equivalent amount of our currently available space of approximately 2.2 million rentable square feet, our operating cash flows after year 2012 may be affected adversely. We are also subject to risks of decreased occupancy through tenant defaults and bankruptcies and potential reduction in rental rates upon renewal of properties that could result in reduced cash flow from operations instead. Cash proceeds from lease terminations are non-recurring. To maintain or increase cash flows in the future we must lease our vacant properties and renew upcoming expiring leases.

Our principal sources of liquidity for distributions to stockholders and O.P. unit holders (noncontrolling interests), debt service, leasing costs, capital expenditures and tenant improvements are to come from net cash flow provided by operations, borrowings from our credit facility, borrowings from related parties, and other sources of financing, as required. We expect these sources of liquidity to be adequate to meet projected distributions to stockholders and other presently anticipated liquidity requirements for the remainder of 2012 and all of 2013. However, there can be no assurance that these sources of liquidity will continue to be available. The unavailability of capital could adversely affect our ability to pay cash dividends to our shareholders. We expect to meet our long-term liquidity requirements for the funding of property development, property acquisitions and other material non-recurring capital improvements through cash, long-term secured and unsecured indebtedness, and the issuance of additional equity securities.

As of March 31, 2012, we had approximately $2.9 million cash on hand and $19 million of credit available under the Heritage Bank of Commerce (“HBC”) credit facility.

Distributions

On April 5, 2012, we paid dividends of $0.22 per share of common stock to all common stockholders of record as of March 30, 2012. On the same date, the operating partnerships paid a distribution of $0.22 per O.P. unit to all holders of O.P. units. The aggregate dividends and distributions amounted to approximately $23.2 million.

Distributions are declared at the discretion of our Board of Directors and are subject to actual cash available for distribution, our financial condition, capital requirements and such other factors, as our Board of Directors deems relevant.

Debt

On February 1, 2012, we acquired three vacant R&D buildings consisting of approximately 202,500 rentable square feet located at 5901, 5921 and 5961 Optical Court in San Jose, California, from the Berg Group. We also acquired ten acres of raw land at Hellyer Avenue and Embedded Way and nine acres of raw land at Hellyer Avenue and Piercy Road from the Berg Group. We and the Independent Directors Committee of our board of directors believed that acquiring these properties would enhance the value of our portfolio of properties in the context of pursuing a strategic transaction. The combined total purchase price for these properties was approximately $28.2 million, which we paid through purchase price offsets of  approximately $9.2 million owed us by the Berg Group for the repayment of past distributions from the  Hellyer Avenue Limited Partnership litigation, and approximately $7.5 million, the amount of the Berg Group’s future obligation for construction of an R&D building at 245 Caspian Drive in Sunnyvale, California, at such time as we had elected to construct those improvements, and the issuance of an unsecured short-term note payable for the remaining amount of approximately $11.5 million with an interest rate of LIBOR plus 1.75%, which matures July 15, 2012. The note payable and accrued interests were fully repaid in March 2012.

At March 31, 2012, we had total indebtedness of approximately $334.4 million, including $327.4 million of fixed rate mortgage debt and $7.0 million debt under the Berg Group mortgage note (related parties), as detailed in the table below. The Northwestern, Allianz, Hartford and HBC loans contain certain financial loan and reporting covenants as defined in the loan agreements. As of March 31, 2012, we were in compliance with these loan covenants.

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Contractual Obligations

The following table identifies the contractual obligations with respect to the maturities and scheduled principal repayments of our secured debt, unsecured notes, credit facility and scheduled interest payments of our fixed-rate and variable-rate debt at March 31, 2012, and provides information about our operating lease obligations that will impact our liquidity and cash flow in future periods.

	Nine Months
	Remaining		Year Ending December 31,
	2012		2013		2014		2015		2016		Thereafter		Total
	(dollars in thousands)
Principal payments (1)	$	12,142	$	82,485	$	12,183	$	12,893	$	13,644	$	201,019	$	334,366
Interest payments-fixed rate debt (2)		14,268		15,056		13,527		12,817		12,066		45,410		113,144
Operating lease obligations (3)		90		30		-		-		-		-		120
Total	$	26,500	$	97,571	$	25,710	$	25,710	$	25,710	$	246,429	$	447,630

(1)   As of March 31, 2012, 100% of our debt was contractually fixed and 0% of our debt bore interest at variable rates. Our debt obligations are set forth in detail in the table below.

(2)   The information in the table above reflects our projected interest rate obligations for the fixed-rate payments based on the contractual interest rates, interest payment dates and scheduled maturity dates.

(3)   Our operating lease obligations relate to a lease of our corporate office facility from a related party.

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The following table and notes set forth information regarding debt outstanding as of March 31, 2012:

Debt Description	Collateral Properties	Balance	Maturity Date	Interest Rate
		(dollars in thousands)
Line of Credit:
Heritage Bank of Commerce	1600 Memorex Drive, Santa Clara, CA 1688 Richard Drive, Santa Clara, CA 1700 Richard Drive, Santa Clara, CA	-	Sept 2013	(1)
Mortgage Note Payable (related parties) (2):	5300 & 5350 Hellyer Avenue, San Jose, CA	$6,986	Jun 2013	7.65%
Mortgage Notes Payable (2):
Hartford Life Insurance Company Hartford Life and Accident Insurance Company Hartford Life and Annuity Insurance Company (collectively known as the “Hartford Loan I”) (3)	5981 Optical Court, San Jose, CA 5500 Hellyer Avenue, San Jose, CA 5550 Hellyer Avenue, San Jose, CA 4050 Starboard Drive, Fremont, CA 45738 Northport Loop, Fremont, CA 233 South Hillview Drive, Milpitas, CA 10300 Bubb Road, Cupertino, CA 1230 E. Arques, Sunnyvale, CA 1250-1280 E. Arques, Sunnyvale, CA 1212 Bordeaux Lane, Sunnyvale, CA 2904 Orchard Parkway, San Jose, CA 3236 Scott Blvd, Santa Clara, CA 6311 San Ignacio Avenue, San Jose, CA 6321-6325 San Ignacio Avenue, San Jose, CA 6331 San Ignacio Avenue, San Jose, CA 6341-6351 San Ignacio Avenue, San Jose, CA 3540-3580 Bassett Street, Santa Clara, CA	103,944	Oct 2018	6.21%
Hartford Life Insurance Company Hartford Life and Accident Insurance Company (collectively known as the “Hartford Loan II”) (4)	5830-5870 Hellyer Avenue, San Jose, CA 5750 Hellyer Avenue, San Jose, CA 255 Caspian Drive, Sunnyvale, CA 5970 Optical Court, San Jose, CA 3301 Olcott Street, Santa Clara, CA	38,383	Sept 2030	6.05%
Northwestern Mutual Life Insurance Company (5)	1750 Automation Parkway, San Jose, CA 1756 Automation Parkway, San Jose, CA 1762 Automation Parkway, San Jose, CA 6320 San Ignacio Avenue, San Jose, CA 6540-6541 Via Del Oro, San Jose, CA 6385-6387 San Ignacio Avenue, San Jose, CA 20605-20705 Valley Green Drive, Cupertino, CA 2001 Walsh Avenue, Santa Clara, CA 2220 Central Expressway, Santa Clara, CA 2300 Central Expressway, Santa Clara, CA 2330 Central Expressway, Santa Clara, CA	67,910	Feb 2013	5.64%
Allianz Life Insurance Company (Allianz Loan I) (6)	5900 Optical Court, San Jose, CA	20,020	Aug 2025	5.56%
Allianz Life Insurance Company (Allianz Loan II) (6)	5325-5345 Hellyer Avenue, San Jose, CA 1768 Automation Parkway, San Jose, CA 2880 Scott Boulevard, Santa Clara, CA 2890 Scott Boulevard, Santa Clara, CA 2800 Scott Boulevard, Santa Clara, CA 10450-10460 Bubb Road, Cupertino, CA 6800-6810 Santa Teresa Blvd., San Jose, CA 6850 Santa Teresa Blvd., San Jose, CA 4750 Patrick Henry Drive, Santa Clara, CA	97,123	Aug 2025	5.22%
		327,380
TOTAL		$334,366

(1)   The interest rate on the revolving line of credit is the greater of LIBOR plus 1.75% or 4.00% per annum. The interest rate for the HBC line of credit at March 31, 2012, was 4.00%. Costs and fees incurred with obtaining this loan aggregated approximately $64, which were deferred and amortized over the loan period. The HBC line of credit contains certain financial loan and reporting covenants as defined in the loan agreement, including minimum tangible net worth and debt service coverage ratio. As of March 31, 2012, we were in compliance with these loan covenants.

(2)   Mortgage notes payable and mortgage note payable (related parties) generally require monthly installments of principal and interest ranging from approximately $96 to $840 over various terms extending through the year 2030. The weighted average interest rate of the mortgage notes payable and mortgage note payable (related parties) was 5.78% at March 31, 2012.

(3)   The Hartford loan I is payable in monthly installments of approximately $838, which includes principal (based upon a 20-year amortization) and interest. Costs and fees incurred with obtaining this loan aggregated approximately $1,058, which were deferred and amortized over the loan period. The Hartford loan I contains certain customary covenants as defined in the loan agreement. As of March 31, 2012, we were in compliance with these loan covenants.

(4)   The Hartford loan II is payable in monthly installments of approximately $288, which includes principal (based upon a 20-year amortization) and interest. Costs and fees incurred with obtaining this loan aggregated approximately $457, which were deferred and amortized over the loan period. The Hartford loan II contains certain customary covenants as defined in the loan agreement. As of March 31, 2012, we were in compliance with these loan covenants.

(5)   The Northwestern loan is payable in monthly installments of approximately $696, which includes principal (based upon a 20-year amortization) and interest. Costs and fees incurred with obtaining this loan aggregated approximately $675, which were deferred and amortized over the loan period. The Northwestern loan contains certain customary covenants as defined in the loan agreement. As of March 31, 2012, we were in compliance with these loan covenants.

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(6)   The Allianz loans are payable in monthly aggregate installments of approximately $1,017, which includes principal (based upon a 20-year amortization) and interest. Costs and fees incurred with obtaining these loans aggregated approximately $1,089, which were deferred and amortized over the loan periods. The Allianz loans contain certain customary covenants as defined in the loan agreements. As of March 31, 2012, we were in compliance with these loan covenants.

At March 31, 2012, our debt to total market capitalization ratio, which is computed as our total debt outstanding divided by the sum of total debt outstanding plus the market value of common stock (based upon the closing price of $9.86 per share on March 30, 2012) on a fully diluted basis, including the conversion of all O.P. units into common stock, was approximately 24.3%. On March 30, 2012, the last trading day in the quarter, total market capitalization, including total debt outstanding, was approximately $1.38 billion.

At March 31, 2012, the outstanding balance remaining under certain notes that we owed to the operating partnerships was approximately $2.7 million. The due date of these notes has been extended to September 30, 2013. The principal amount of these notes, along with the interest expense, which is interest income to the operating partnerships, is eliminated in consolidation and is not included in the corresponding line items within the condensed consolidated financial statements. However, the interest income earned by the operating partnerships, which is interest expense to us, in connection with this debt, is included in the calculation of noncontrolling interests as reported on the condensed consolidated statement of operations, thereby reducing our net income by this same amount. At present, our only means for repayment of this debt is through distributions that we receive from the operating partnerships that are in excess of the amount of dividends to be paid to our stockholders or by raising additional equity capital.

Historical Cash Flows

Comparison of the three months ended March 31, 2012 with the three months ended March 31, 2011

Net cash provided by operating activities for the three months ended March 31, 2012, was approximately $17.7 million compared with $29.5 million for the same period in 2011. Cash flow decreased primarily because in 2011 we received approximately $10.9 million from M&M Real Estate Control & Restructuring, LLC, a variable interest entity, as the final release of restricted cash from our August 2007 lease assignment and assumption transaction with this variable interest entity.

Net cash provided by (used in) investing activities was approximately $6.7 million and ($0.9) million for the three months ended March 31, 2012 and 2011, respectively. Cash provided by investing activities during the three months ended March 31, 2012, related to the sales of real estate of approximately $35.4 million, offset with the acquisitions of three R&D buildings and 19 acres of raw land from the Berg group for approximately $28.2 million and $0.2 million in real estate improvements. We received cash of approximately $16.6 million and a note receivable in the amount of approximately $18.8 million for the properties we sold. As of March 31, 2012, approximately $1.7 million of the note receivable has been repaid. The three R&D buildings and 19 acres of raw land were acquired by offsetting the Berg Group’s $16.7 million obligation to the Company towards the purchase price and issuing an unsecured short-term note payable for approximately $11.5 million. As of March 31, 2012, the note payable had been fully repaid. Cash used in investing activities during the three months ended March 31, 2011, related to real estate improvements.

Net cash used in financing activities was approximately $21.5 million for the three months ended March 31, 2012, compared with approximately $30.4 million for the three months ended March 31, 2011. During the first three months of 2012, we financed approximately $13.5 million in short-term debt from the Berg Group, paid approximately $3.3 million under our line of credit, paid approximately $17.4 million towards outstanding debt, paid approximately $11.4 million of distributions to noncontrolling interests and paid approximately $2.9 million of dividends to common stockholders. During the same period in 2011, we paid approximately $14.5 million towards outstanding debt, paid approximately $12.6 million of distributions to noncontrolling interests and paid approximately $3.3 million of dividends to common stockholders.

Funds From Operations (“FFO”)

FFO is a non-GAAP financial measurement used by real estate investment trusts to measure and compare operating performance. As defined by the National Association of Real Estate Investment Trusts, FFO represents net income (loss), computed in accordance with GAAP, plus non-recurring events other than “extraordinary items” under GAAP, excluding gains and losses from sales of depreciable operating properties, plus real estate related depreciation and amortization, excluding amortization of deferred financing costs and depreciation of non-real estate assets, and after adjustments for joint ventures and unconsolidated partnerships. FFO does include impairment losses for properties held for sale and held for use. Management considers FFO to be an appropriate supplemental measure of our operating and financial performance because when compared year over year, it reflects the impact to operations from trends in occupancy rates, rental rates, operating costs, general and administrative expenses and interest costs, providing a perspective not immediately apparent from net income. In addition, management believes that FFO provides useful information about our financial performance when compared with other REITs because FFO is generally recognized as the industry standard for reporting the operations of REITs. In addition to the disclosure of operating earnings per share, we will continue to use FFO as a measure of our performance. FFO should neither be considered as an alternative for net income as a measure of profitability nor is it comparable to cash flows provided by operating activities determined in accordance with GAAP, nor is FFO necessarily indicative of funds available to meet our cash needs, including the need to make cash distributions to satisfy REIT requirements. For example, FFO is not adjusted for payments of debt principal required under our debt service obligations.

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Our definition of FFO also assumes conversion at the beginning of the period of all convertible securities, including noncontrolling interests represented by O.P. units that might be exchanged for common stock. FFO does not represent the amount available for management’s discretionary use; as such funds may be needed for capital replacement or expansion, debt service obligations or other commitments and uncertainties. Furthermore, FFO is not comparable to similarly entitled items reported by other REITs that do not define FFO exactly as we do.

FFO for the three months ended March 31, 2012 and 2011, as reconciled to net income, are summarized in the following table:

	Three Months Ended March31,
	2012			2011
	(dollars in thousands)
Net income	$	13,253		$	9,936
Add:
Depreciation and amortization (1)		6,525			6,411
Less:
Noncontrolling interests in joint ventures		(110	)		(107	)
Gain on sale of real estate		(5,519	)		-
FFO	$	14,149		$	16,240

(1)   Includes depreciation and amortization of real estate from discontinued operations totaling approximately $336 for the three months ended March 31, 2011. Includes our portion of depreciation and amortization of real estate and leasing commissions from our unconsolidated joint venture totaling approximately $60 for the three months ended March 31, 2012 and 2011. Also includes our amortization of leasing commissions of approximately $472 and $524 for the three months ended March 31, 2012 and 2011, respectively. Amortization of leasing commissions is included in the property operating and maintenance line item in the condensed consolidated statements of operations.

Dividend and Distribution Policy

Our board of directors determines the amount and timing of dividends and distributions to our stockholders and O.P. unit holders. The board of directors will consider many factors prior to making any dividends and distributions, including the following:

·   the amount of cash available for dividends and distributions;

·   our ability to refinance maturing debt obligations;

·   our financial condition;

·   whether to reinvest funds rather than to distribute such funds;

·   our committed and projected capital expenditures;

·   the amount of cash required for new property acquisitions, including acquisitions under existing agreements with the Berg Group;

·   the amount of our annual debt service requirements;

·   prospects of tenant renewals and re-leases of properties subject to expiring leases;

·   cash required for re-leasing activities;

·   the annual dividend and distribution requirements under the REIT provisions of the federal income tax laws; and

·   such other factors as the board of directors deems relevant.

We cannot assure you that we will be able to meet or maintain our cash dividend and distribution objectives.

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Item 3. Quantitative and Qualitative Disclosures About Market Risk

We do not generally hold market risk sensitive instruments for trading purposes. We use fixed and variable rate debt to finance our operations. Our exposure to market risk for changes in interest rates relates primarily to our current variable rate debt and future debt obligations. We are vulnerable to significant fluctuations of interest rates on our floating rate debt and pricing on our future debt. We manage our market risk by monitoring interest rates where we try to recognize the unpredictability of the financial markets and seek to reduce potentially adverse effect on the results of our operations. This takes frequent evaluation of available lending rates and examination of opportunities to reduce interest expense through new sources of debt financing. Several factors affecting the interest rate risk include governmental monetary and tax policies, domestic and international economics and other factors that are beyond our control. The following table provides information about the principal cash flows, weighted average interest rates, and expected maturity dates for debt outstanding as of March 31, 2012. The current terms of this debt are described in Item 2, “Management’s Discussion and Analysis of Financial Condition and Results of Operations – Liquidity and Capital Resources.” For fixed rate debt, we estimate fair value by using discounted cash flow analyses based on borrowing rates for similar kinds of borrowing arrangements.

For fixed rate debt, the table presents the assumption that the outstanding principal balance at March 31, 2012, will be paid according to scheduled principal payments and that we will not prepay any of the outstanding principal balance.

	Nine Months Remaining	Year Ending December 31,
	2012	2013	2014	2015	2016	Thereafter	Total	Fair Value
	(dollars in thousands)
Fixed Rate Debt:
Secured and unsecured debt	$12,142	$82,485	$12,183	$12,893	$13,644	$201,019	$334,366	$352,496
Weighted average interest rate	5.78%	5.78%	5.78%	5.78%	5.78%	5.78%

The primary market risks we face are interest rate fluctuations. As a result, we pay lower rates of interest in periods of decreasing interest rates and higher rates of interest in periods of increasing interest rates. We did not have any derivative instruments or variable debt as of March 31, 2012. All of our debt is denominated in United States dollars.

Item 4. Controls and Procedures

Disclosure Controls and Procedures

We strive to maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our Exchange Act reports is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our chief executive officer and chief financial officer, as appropriate, to allow for timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives and management necessarily is required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

As required  by SEC Rule 13a-15(b) we conducted an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer, President and Vice President of Finance, of the effectiveness of the design and operation of our disclosure controls and procedures. Based upon that evaluation, the Chief Executive Officer, President and Vice President of Finance concluded that our disclosure controls and procedures (as defined in Rule 13a-15(e) or Rule 15d-15(e)) were effective as of March 31, 2012.

Changes in Internal Control over Financial Reporting

There was no material change in our internal control over financial reporting during the last fiscal quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II - Other Information

ITEM 1.  Legal Proceedings

The discussion of legal proceedings is incorporated herein by reference from Part I “Item 1. – Notes to Condensed Consolidated Financial Statements – Note 7 – Commitments and Contingencies.”

ITEM 1A.  Risk Factors

While we attempt to identify, manage and mitigate risks and uncertainties associated with our business to the extent practical under the circumstances, some level of risk and uncertainty will always be present. In addition to the other information contained in this report, you should carefully review the factors discussed under Item 1A of our annual report on Form 10-K for the year ended December 31, 2011, which describes some of the risks and uncertainties associated with our business. These risks and uncertainties have the potential to materially affect our business, financial condition, results of operations, cash flows, and future prospects. Additional risks and uncertainties not presently known to us or that we currently deem immaterial also may impair our business operations.

ITEM 6.  Exhibits

10.29.7		Berg Group Promissory Note, dated April 5, 2012
10.9		Purchase Agreement of 5901, 5921, and 5961 Optical Court and Hellyer-Embedded & Hellyer-Piercy Land
31.1		Section 1350 Certificate of CEO
31.2		Section 1350 Certificate of President & COO
31.3		Section 1350 Certificate of Principal Financial Officer
32		Certification pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101		XBRL (eXtensive Business Reporting Language). The following financial materials from Mission West Properties, Inc.’s Quarterly Report on Form 10-Q for the period ended March 31, 2012, formatted in XBRL: (i) Condensed Consolidated Balance Sheets, (ii) Condensed Consolidated Statements of Operations, (iii) Condensed Consolidated Statements of Cash Flows, and (iv) Notes to Condensed Consolidated Financial Statements. *
*	As provided in Rule 406T of Regulation S-T, these interactive data files are deemed not filed or part of a registration statement or prospectus for purposes of Sections 11 and 12 of the Securities Act of 1933 and Section 18 of the Securities Exchange Act of 1934.

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Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereto duly authorized.

Mission West Properties, Inc.

(Registrant)

Date: May 3, 2012	By:	/s/ Carl E. Berg
		Carl E. Berg
		Chief Executive Officer

Date: May 3, 2012	By:	/s/ Wayne N. Pham
		Wayne N. Pham
		Vice President of Finance
		(Principal Accounting Officer and Duly Authorized Officer)

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EX-10.9

EXHIBIT 10.9

CLOSING MEMORANDUM

Mission West Properties, L.P., a Delaware limited partnership (“MWP”), and certain members of the Berg Group (collectively the "Seller"), desire to document the purchase and sale of that certain real property (the “Property”) commonly known as 5901, 5921 and 5961 Optical Court, the Hellyer-Embedded land, and the Hellyer-Piercy land located in San Jose, California.  The purchase and sale of the Property is being consummated pursuant to an agreement between Lightpointe Communications, Inc. (“Berg”) and Mission West Properties, L.P.

The parties hereto agree as follows:

Property:  The Property is located at 5901, 5921 and 5961 Optical Court, San Jose, California, and is improved with an approximate 67,500 square foot per building. The Property is also located in San Jose, California as 10.165 acres of raw land at the Hellyer-Embedded site and 9.33 acres of raw land at the Hellyer-Piercy site. The “Property” shall be deemed to include all of Sellers’ right, title, and interest therein.

Consideration:  The Acquisition Value as agreed to by MWP and Berg for the Property is $28,190,427.  The consideration to be paid by MWP is as follows:

Repayment of HALP distributions:	$	7,917,729.72
Interest on HALP distributions:		1,299,604.50
245 Caspian obligation:		7,493,728.15
Unsecured Note @ LIBOR+1.75%:		11,479,365.00
Total	$	28,190,427.37

Closing Date: The effective date of the transfer of the Property is February 1, 2012.

Conditions:  The parties hereby waive all conditions to closing.

IN WITNESS WHEREOF, the parties hereto have executed this Closing Memorandum effective as of February 1, 2012.

MWP		Seller
Mission West Properties, L.P.,		Lightpointe Communications, Inc.
By: Mission West Properties, Inc.,
Its General Partner
/s/ Raymond V. Marino		/s/ Carl E. Berg
Raymond V. Marino		Carl E. Berg
Its:	President & COO	Its:	President

EX-10.29.7

EXHIBIT 10.29.7

PROMISSORY NOTE

$12,866,960.66 April 5, 2012

Mission West Properties, L.P., Mission West Properties, L.P. I, Mission West Properties, L.P. II, Mission West Properties, L.P. III, Mission West Properties, L.P. IV and Mission West Properties, L.P. V (collectively referred to herein as “Mission”)

promises to pay to The Berg Group

the principal sum of Twelve Million Eight Hundred Sixty Six Thousand Nine Hundred Sixty Dollars and 66 Cents ($12,866,960.66),

plus interest at the rate of 30 day LIBOR plus 1.75 percent per annum (compounded on the basis of a 366-day year) beginning on the 5th day of April 2012.

Should interest not so be paid, it shall thereafter bear like interest as the principal, but such unpaid interest so compounded shall not exceed an amount equal to simple interest on the unpaid principal at the maximum rate permitted by law. Should default be made in the payment of any installment of interest when due, the whole sum of principal and interest shall become immediately due and payable at the option of the holder of this note.  Should suit be commenced or an attorney employed to enforce the payment of this note, we agree to pay such additional sum as the court may adjudge as reasonable attorney’s fees in said suit. Principal and interest are payable in lawful money of the United States.

Principal and interest are payable in lawful money of the United States no later than June 30, 2012.  Notwithstanding the above, Mission shall use its best efforts to repay the loan as soon as possible using all available sources of cash, including but not limited to cash generated from operations and cash available from any other financing sources.

Signed By:	/s/ Raymond V. Marino	4/5/12
	Raymond V. Marino, Pres. & COO	Date
	Mission West Properties, Inc.
	Its General Partner

Acknowledged:	/s/ Carl E. Berg	4/5/12
	Carl E. Berg	Date

EX-31.1

EXHIBIT 31.1

CERTIFICATION PURSUANT TO

RULE 13a-14 OF THE SECURITIES EXCHANGE ACT OF 1934

I, Carl E. Berg, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Mission West Properties, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: May 3, 2012

By: /s/ Carl E. Berg

Carl E. Berg

Chairman & Chief Executive Officer

EX-31.2

EXHIBIT 31.2

CERTIFICATION PURSUANT TO

RULE 13a-14 OF THE SECURITIES EXCHANGE ACT OF 1934

I, Raymond V. Marino, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Mission West Properties, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: May 3, 2012

By: /s/ Raymond V. Marino

Raymond V. Marino

President & Chief Operating Officer

EX-31.3

EXHIBIT 31.3

CERTIFICATION PURSUANT TO

RULE 13a-14 OF THE SECURITIES EXCHANGE ACT OF 1934

I, Wayne N. Pham, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Mission West Properties, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: May 3, 2012

By: /s/ Wayne N. Pham

Wayne N. Pham

Vice President of Finance

EX-32

EXHIBIT 32

CERTIFICATION OF CEO AND CFO PURSUANT TO

18 U.S.C. § 1350,

AS ADOPTED PURSUANT TO

§ 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Mission West Properties, Inc. (the “Company”) for the quarterly period ended March 31, 2012, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of Carl E. Berg, Chairman of the Board and Chief Executive Officer of the Company, Raymond V. Marino, President and Chief Operating Officer of the Company and Wayne N. Pham, Vice President of Finance of the Company, hereby certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, to the best of his knowledge, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

By: /s/ Carl E. Berg

Carl E. Berg

Chairman of the Board and Chief Executive Officer

May 3, 2012

By: /s/ Raymond V. Marino

Raymond V. Marino

President and Chief Operating Officer

May 3, 2012

By: /s/ Wayne N. Pham

Wayne N. Pham

Vice President of Finance

May 3, 2012

This certification accompanies this Report pursuant to § 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, or otherwise required, be deemed filed by the Company for purposes of § 18 of the Securities Exchange Act of 1934, as amended.

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Note 4 - Stock Transactions

3 Months Ended

Mar. 31, 2012

Stock Transactions [Text Block]

4.    Stock Transactions

During the three months ended March 31, 2012, two limited partners exchanged a total of 82,000 O.P. units for 82,000 shares of the Company’s common stock under the terms of the Exchange Rights Agreement among the Company and all limited partners of the operating partnerships resulting in a reclassification of approximately $821 from noncontrolling interests to stockholders’ equity. Neither the Company nor the operating partnerships received any proceeds from the issuance of the common stock in exchange for O.P. units. Under the limited partnership agreements, each exchange is treated as the purchase of additional O.P. units of the general partner interest by the Company in exchange for stock, and the contribution of additional capital to the partnership by the Company equal in amount to the value of the stock issued in exchange for the limited partnership interests.

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Note 3 - Real Estate

3 Months Ended

Mar. 31, 2012

Mergers, Acquisitions and Dispositions Disclosures [Text Block]

3.    Real Estate

Property Acquisition

On February 1, 2012, the Company acquired three vacant R&D buildings consisting of approximately 202,500 rentable square feet located at 5901, 5921 and 5961 Optical Court in San Jose, California, from the Berg Group for a total purchase price of $18,000. The Company also acquired approximately ten acres of raw land at Hellyer Avenue and Embedded Way for approximately $5,313 and nine acres of raw land at Hellyer Avenue and Piercy Road for approximately $4,877 from the Berg Group. The combined purchase price for the three R&D buildings and raw land totaled approximately $28,190. The Company acquired these properties by offsetting the purchase price with approximately $9,217, the amount the Berg Group owed to the Company from the outcome of the Hellyer Avenue Limited Partnership litigation and approximately $7,494, the amount the Berg Group was obligated to pay toward the construction of an R&D building in connection with the Company’s 2001 acquisition of 245 Caspian Drive in Sunnyvale, California. The Company issued an unsecured short-term note payable for the remaining amount of approximately $11,479 with an interest rate of LIBOR plus 1.75%, which is due July 15, 2012, with an option to extend another six months. As of March 31, 2012, the note payable and accrued interest had been fully repaid.

The purchase price allocation for this acquisition was determined in accordance with the principles under the Business Combinations Topic of the FASB ASC 805.

Property Disposition

On January 9, 2012, the Company disposed of three vacant R&D buildings consisting of approximately 165,000 rentable square feet located at 1680-1690 McCandless Drive, 1740-1768 McCandless Drive and 1810-1830 McCandless Drive in Milpitas, California. A total net gain of approximately $7,479 will be recognized in installments and classified as discontinued operations on the total sales price of $21,780. For the quarter ended March 31, 2012, approximately $1,629 was recognized as gain and classified as discontinued operations on sale of real estate under the installment method. The buyer issued an unsecured promissory note to the Company for the principal amount of $18,780 with an interest rate of 0% per annum. The total sales price encompasses the sum of the following amounts: a) The down payment price of $3,000; b) Yearly payments of $3,000 on the anniversary of the effective date for four years; and c) On the fifth year anniversary of the effective date, the buyer will pay the remaining balance of the total sales price, contingent that the buyer receives the park in lieu fees. If the buyer has not received park in lieu fees by the fifth year anniversary of the effective date, both buyer and seller can negotiate to extend the term of the note.

On February 14, 2012, the Company completed the sale of three R&D buildings consisting of approximately 112,000 rentable square feet located at 1625-1657 McCandless Drive, 1725-1745 McCandless Drive and 1815-1845 McCandless Drive in Milpitas, California. The property at 1815-1845 McCandless Drive represented approximately 36.04% of all of the R&D properties at this address. The remaining 63.96% will be sold in the second phase at a later date to the same buyer. On the total cash sales price of approximately $13,613, the Company recognizeda gain of approximately $3,890 and classified it as a gain from disposal of discontinued operations.

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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Investments in real estate:
Land	$ 323,173	$ 306,474
Buildings and improvements	757,631	745,962
Real estate related intangible assets	3,561	3,561
Total investments in properties	1,084,365	1,055,997
Accumulated depreciation and amortization	(235,204)	(229,211)
Assets held for sale, net of accumulated depreciation	31,804	54,361
Net investments in properties	880,965	881,147
Investment in unconsolidated joint venture	3,575	3,557
Net investments in real estate	884,540	884,704
Cash and cash equivalents	2,850
Deferred rent	16,449	16,650
Other assets, net	31,629	35,133
Total assets	935,468	936,487
Liabilities:
Mortgage notes payable	327,380	331,166
Mortgage note payable (related parties)	6,986	7,139
Revolving line of credit		3,305
Interest payable	1,577	1,606
Prepaid rent and deferred revenue	11,185	5,836
Dividends and distributions payable	23,163	13,687
Accounts payable and accrued expenses	18,238	16,344
Security deposits	4,366	4,317
Total liabilities	392,895	383,400
Commitments and contingencies (Note 7)
Stockholders’ equity:
Preferred stock, $.001 par value, 20,000,000 shares authorized, none issued and outstanding
Common stock, $.001 par value, 200,000,000 shares authorized, 22,668,020 and 22,586,020 shares issued and outstanding at March 31, 2012 and December 31, 2011	23	23
Additional paid-in capital	176,722	175,900
Distributions in excess of accumulated earnings	(35,104)	(32,962)
Total stockholders’ equity	141,641	142,961
Noncontrolling interests in operating partnerships	400,932	410,126
Total equity	542,573	553,087
Total liabilities and equity	$ 935,468	$ 936,487

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Note 1 - Organization and Formation of the Company

3 Months Ended

Mar. 31, 2012

Nature of Operations [Text Block]

1.    Organization and Formation of the Company

Mission West Properties, Inc. (the “Company”) is a fully integrated, self-administered and self-managed real estate company that acquires and manages research and development (“R&D”)/office properties in the portion of the San Francisco Bay Area commonly referred to as Silicon Valley. In July 1998, the Company purchased an approximate 12.11% interest in four existing limited partnerships (referred to collectively as the “operating partnerships”) and obtained control of these partnerships by becoming the sole general partner in each one effective July 1, 1998, for financial accounting and reporting purposes. All limited partnership interests in the operating partnerships were converted into 59,479,633 operating partnership (“O.P.”) units, which represented a limited partnership ownership interest of approximately 87.89% of the operating partnerships. The operating partnerships are the vehicles through which the Company holds its real estate investments, makes real estate acquisitions, and generally conducts its business.

On December 30, 1998, the Company was reincorporated under the laws of the State of Maryland through a merger with and into Mission West Properties, Inc. Accordingly, shares of the former company, Mission West Properties, a California corporation (no par), which were outstanding at December 30, 1998, were converted into shares of common stock, $.001 par value per share, on a one-for-one basis.

In late December 2011, the Company formed two additional operating partnerships and transferred certain R&D properties from two current operating partnerships into the two new operating partnerships through two separate partnership division transactions. The two transactions changed the nominal ownership of title to certain properties but did not modify the economic interests or rights of the Company or the limited partners in the operating partnerships. The Company is the sole general partner of the two new operating partnerships. There was no issuance of common shares associated with these transactions, and the number of O.P. units issued in each of the new operating partnerships was fully offset by the cancellation of the same number O.P. units of each respective predecessor operating partnership.

As of March 31, 2012, the Company owned a controlling general partnership interest of 25.85%, 21.86%, 16.32%, 12.53%, 21.86% and 16.32% in Mission West Properties, L.P., Mission West Properties, L.P. I, Mission West Properties, L.P. II, Mission West Properties, L.P. III, Mission West Properties, L.P. IV and Mission West Properties, L.P. V, respectively, which represents a 21.50% general partnership interest in the operating partnerships, taken as a whole, on a consolidated weighted average basis. The ownership interests which the Company does not own in the operating partnerships are accounted for as noncontrolling interests. Through the operating partnerships, the Company owns interests in 111 R&D/office properties, all of which are located in the Silicon Valley.

The Company has elected to be taxed as a Real Estate Investment Trust (“REIT”) under the Internal Revenue Code of 1986, as amended. Accordingly, no provision has been made for income taxes for the three months ended March 31, 2012 and 2011.

Business Segment Information

The Company’s primary business is the ownership and management of R&D/office real estate with a geographic concentration in the Silicon Valley of the San Francisco Bay Area. Accordingly, the Company has concluded it currently has a single reportable segment for the Segment Reporting Topic of the Financial Accounting Standards Board Accounting Standards Codification (“FASB ASC”) 280 purposes.

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Note 2 - Basis of Presentation

3 Months Ended

Mar. 31, 2012

Basis of Accounting [Text Block]

2.    Basis of Presentation

Principles of Consolidation and Basis of Presentation

The accompanying unaudited interim condensed consolidated financial statements of the Company have been prepared in accordance with Rule 10-01 of Regulation S-X promulgated by the Securities and Exchange Commission (“SEC”) and, therefore, do not include all information and footnotes necessary for a fair presentation of financial position, results of operations and cash flows in conformity with accounting principles generally accepted in the United States of America (“GAAP”). In the opinion of the Company, however, the accompanying unaudited interim condensed consolidated financial statements contain all adjustments, consisting only of normal recurring adjustments, necessary to present fairly the Company’s consolidated financial position as of March 31, 2012, their consolidated results of operations for the three months ended March 31, 2012 and 2011, and their cash flows for the three months ended March 31, 2012 and 2011. All significant inter-company balances have been eliminated in consolidation. The condensed consolidated financial statements as of March 31, 2012, and for the three months ended March 31, 2012 and 2011, and related footnote disclosures are unaudited. The results of operations for the three months ended March 31, 2012, are not necessarily indicative of the results to be expected for the entire year.

The December 31, 2011, condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP.

The Company evaluates all joint venture arrangements for consolidation. The percentage interest in the joint venture, evaluation of control and whether a variable interest entity (“VIE”) exists are all considered in determining if the arrangement qualifies for consolidation in accordance with the Consolidation Topic of the FASB ASC 810. As of March 31, 2012, the Company had no VIE to consolidate.

Stock-Based Option Compensation Accounting

The Compensation-Stock Compensation Topic of the FASB ASC 718 addresses the accounting for stock options. It requires that the cost of all employee, director and consultant stock options, as well as other equity-based compensation arrangements, be reflected in the financial statements based on the estimated fair value of the awards. It is applicable to any award that is settled or measured in stock, including stock options, restricted stock, stock appreciation rights, stock units, and employee stock purchase plans. At March 31, 2012, the Company had one stock-based compensation plan.

The following table shows the activity and detail for the 2004 Equity Incentive Plan during the three months ended March 31, 2012.

			Weighted Average
	Options		Option Price
	Outstanding		Per Share
Balance, December 31, 2011		2,827,641	$	8.54
Options granted		-		-
Options exercised		-		-
Options expired		-		-
Balance, March 31, 2012		2,827,641	$	8.54

The Company measures compensation cost for its stock options at fair value on the date of grant and recognizes compensation expense relating to the remaining unvested portion of outstanding stock options at the time of adoption ratably over the vesting period, generally four years. The fair value of the Company’s stock options is determined using the Black-Scholes option pricing model. Compensation expense related to the Company’s share-based awards is included in general and administrative expenses in the Company’s accompanying condensed consolidated statements of operations. Under the Compensation-Stock Compensation Topic of the FASB ASC 718, the Company recorded approximately $1 and $14 of expense for share-based compensation relating to grants of stock options for the three months ended March 31, 2012 and 2011, respectively.

Noncontrolling Interests

The noncontrolling interest provisions of the Consolidation Topic of the FASB ASC 810 clarifies that a noncontrolling interest in a subsidiary is an ownership interest in a consolidated entity, which should be reported as equity in the parent’s consolidated financial statements. It requires disclosure, on the face of the consolidated statement of operations, of those amounts of consolidated net income and other comprehensive other income attributable to controlling and noncontrolling interests, eliminating the past practice of reporting amounts of income attributable to noncontrolling interests as an adjustment in arriving at consolidated net income.

The following table presents a reconciliation of the December 31, 2011 and March 31, 2012, carrying amounts for equity and the related amounts of equity attributable to stockholders’ equity and noncontrolling interests:

	Equity
	Common Stock		Additional Paid-in Capital		Distributions in Excess of Accumulated Earnings			Noncontrolling Interests			Total
	(dollars in thousands)
Balance, December 31, 2011	$	23	$	175,900	$	(32,962	)	$	410,126		$	553,087
Net income		-		-		2,844			10,409			13,253
Amortization of previously granted share awards		-		1		-			-			1
Conversions of operating partnership units		-		821		-			(821	)		-
Dividends and distributions		-		-		(4,986	)		(18,782	)		(23,768	)
Balance, March 31, 2012	$	23	$	176,722	$	(35,104	)	$	400,932		$	542,573

Noncontrolling interests represent the aggregate partnership interest in the operating partnership held by the operating partnership limited partner unit holders. Income allocated to noncontrolling interests is based on the unit holders’ ownership percentage of the operating partnership. Because an O.P. unit is generally redeemable for cash or a share of common stock at the option of the Company, it is deemed to be equivalent to a share of common stock. Therefore, such transactions are treated as capital transactions and result in an allocation between stockholders’ equity and noncontrolling interests in the accompanying condensed consolidated balance sheets to account for the change in the ownership of the underlying equity in the operating partnerships. The Company’s noncontrolling interests represent the separate private ownership of the operating partnerships by the Berg Group (defined as Carl E. Berg, his brother Clyde J. Berg, members of their respective immediate families, and certain entities they control) and other non-affiliate interests. As of March 31, 2012, these interests accounted for approximately 78.50% of the ownership interests in the real estate operations of the Company on a consolidated weighted average basis.

The amount of noncontrolling interests in net income is calculated by taking the net income of the operating partnerships (on a stand-alone basis) multiplied by the respective weighted average noncontrolling interests’ ownership percentage.

Allocation of corporate general and administrative expenses to the operating partnerships is performed based upon shares and O. P. units outstanding for each operating partnership in relation to the total for all six operating partnerships.

Reclassifications

Certain reclassifications have been made to the previously reported 2011 condensed consolidated financial statements in order to conform to the 2012 presentation.

The following notes highlight significant changes to the notes to the Company’s December 31, 2011, audited consolidated financial statements and should be read together with the consolidated financial statements and notes thereto included in the Company’s 2011 Annual Report on Form 10-K filed on March 15, 2012.

Subsequent Events

The Company has evaluated subsequent events through the date the consolidated financial statements were issued.

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Preferred stock, par value (in Dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in Dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	22,668,020	22,586,020
Common stock, shares outstanding	22,668,020	22,586,020

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Document And Entity Information	3 Months Ended
	Mar. 31, 2012	Apr. 30, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	MISSION WEST PROPERTIES INC
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		22,668,020
Amendment Flag	false
Entity Central Index Key	0001067419
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	Mar. 31, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1

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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating revenues:
Rental income	$ 20,012	$ 21,723
Tenant reimbursements	3,948	4,618
Other income	272	1,002
Total operating revenues	24,232	27,343
Operating expenses:
Property operating and maintenance	2,409	2,512
Real estate taxes	2,428	3,049
General and administrative	651	521
Depreciation and amortization	5,993	5,491
Total operating expenses	11,481	11,573
Operating income	12,751	15,770
Other income (expenses):
Equity in earnings (loss) of unconsolidated joint venture	114	(8)
Interest income	93	69
Interest expense	(4,921)	(5,279)
Interest expense – related parties	(146)	(147)
Income from continuing operations	7,891	10,405
Discontinued operations:
Gain from disposal of discontinued operations	5,519
Loss attributable to discontinued operations	(157)	(469)
Net income (loss) from discontinued operations	5,362	(469)
Net income	13,253	9,936
Net income attributable to noncontrolling interests	(10,409)	(7,536)
Net income available to common stockholders	$ 2,844	$ 2,400
Net income per common share from continuing operations:
Basic (in Dollars per share)	$ 0.09	$ 0.11
Diluted (in Dollars per share)	$ 0.08	$ 0.11
Net income per common share from discontinued operations:
Basic (in Dollars per share)	$ 0.04
Diluted (in Dollars per share)	$ 0.04
Net income per common share to common stockholders:
Basic (in Dollars per share)	$ 0.13	$ 0.11
Diluted (in Dollars per share)	$ 0.12	$ 0.11
Weighted average shares of common stock outstanding (basic) (in Shares)	22,637,668	22,288,103
Weighted average shares of common stock outstanding (diluted) (in Shares)	23,157,454	22,405,276

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Note 7 - Commitments and Contingencies

3 Months Ended

Mar. 31, 2012

Commitments and Contingencies Disclosure [Text Block]

7.    Commitments and Contingencies

From time to time, the Company is engaged in legal proceedings arising in the ordinary course of business. The Company does not expect any of such proceedings to have a material adverse effect on its cash flows, financial condition or results of operations. The Company is currently involved in the following legal proceeding, which it believes will not have a material adverse effect on its operating results, cash flows or financial condition.

Guarantees and Indemnities

Under its articles of incorporation and bylaws, the Company has agreed to indemnify its officers and directors for certain events or occurrences arising as a result of the officer’s or director’s serving in such capacity. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited. The Company believes the estimated fair value of its obligations under these indemnification agreements is minimal and has recorded no liabilities for these agreements as of March 31, 2012.

The Company also enters into agreements with other companies in the ordinary course of business, typically lenders, joint venture partners, contractors, and tenants that contain indemnification provisions. Under these provisions the Company typically agrees to indemnify and hold harmless the indemnified party for losses suffered or incurred by the indemnified party as a result of certain kinds of activities or inactions of the Company. These indemnification provisions generally survive termination of the underlying agreement. The maximum potential amount of future payments the Company could be required to make under these indemnification provisions is unlimited. To date, the Company has not incurred material costs to defend lawsuits or settle claims related to these indemnification agreements. As a result, the Company believes the estimated fair value of these agreements is minimal. Accordingly, the Company has recorded no liabilities for these agreements as of March 31, 2012.

Seismic Activity

The Company’s properties are located in an active seismic area of Silicon Valley. Insurance policies currently maintained by the Company do not cover seismic activity, although they do cover losses from fires after an earthquake.

Environmental Issues

The environmental investigations that have been conducted on the Company’s properties have not revealed any environmental liability that the Company believes would have a material adverse effect on its financial condition, results of operations and assets, and the Company is not aware of any such liability. Nonetheless, it is possible that there are material environmental liabilities of which the Company is unaware. In addition, the Company cannot assure that future laws, ordinances, or regulations will not impose any material environmental liability, or that the current environmental condition of the properties has not been, or will not be, affected by tenants and occupants of the properties, by the condition of properties in the vicinity of the properties, or by third parties unrelated to the Company.

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Note 6 - Related Party Transactions

3 Months Ended

Mar. 31, 2012

Related Party Transactions Disclosure [Text Block]

6.    Related Party Transactions

As of March 31, 2012, the Berg Group owned 75,769,684 O.P. units. The Berg Group’s combined ownership of O.P. units and shares of common stock as of March 31, 2012, represented approximately 74% of the total equity interests, assuming conversion of all O.P. units outstanding into the Company’s common stock.

As of March 31, 2012, debt in the amount of approximately $6,986 was due the Berg Group under a mortgage note established May 15, 2000, in connection with the acquisition of a 50% interest in Hellyer Avenue Limited Partnership, the obligor under the mortgage note. The mortgage note bears interest at 7.65% and principal payments are amortized over 20 years. Interest expense incurred in connection with the mortgage note was approximately $136 and $146 for the three months ended March 31, 2012 and 2011, respectively.

In September 2009, the superior court issued a final decision in the Mission West Properties, L.P. v. Republic Properties Corporation litigation (the “Republic Litigation”) and entry of judgment in favor of Republic Properties Corporation (“RPC”) that RPC is and at all times was a partner in Hellyer Avenue Limited Partnership (“Hellyer LP”) and was entitled to receive all past distributions from profits that were paid to Berg & Berg Enterprises, Inc. (“BBE”) plus accrued interest. The Company filed an appeal. In October 2009, the Company deposited with the clerk of the Santa Clara County Superior Court a check in the amount of approximately $13,975. Of this amount, $9,317 represented the amount owed to RPC and $4,658 million represented a deposit to appeal the court’s final decision in the litigation. The Company accrued approximately $4,389 in interest expense since September 2009 on the amount of past distributions that would be payable to RPC by Hellyer LP based on the amount of the judgment at the legal rate of interest of 10%.  In addition, because RPC’s interest in the Hellyer LP was transferred to BBE and past distributions from profits were paid to BBE, the Company accrued approximately $1,300 in interest receivable due from BBE. The $1,300 interest income accrual was calculated at an interest rate of LIBOR plus 1.25%. The Company’s appeal was unsuccessful, and in December 2011, the Company finalized the details with its legal counsel to arrange for the transfer of funds held by the California Superior Court to pay off the judgment plus accrued interest, and coordinate with the Independent Directors Committee of the Board of Directors and BBE on the transfer of the former RPC interest from BBE to RPC. The amount of approximately $9,217, consisting of the aggregate distributions and accrued interest, is owed by BBE to the Company. In February 2012, the $9,217 owed by the Berg Group was applied towards the purchase price for properties acquired from the Berg Group. See Note 3, “Real Estate” above for details of the acquisitions.

As disclosed under Note 3, “Real Estate,” on February 1, 2012, the Company acquired three vacant R&D buildings located at 5901, 5921 and 5961 Optical Court in San Jose, California, from the Berg Group consisting of approximately 202,500 rentable square feet for a total purchase price of $18,000. The Company also acquired approximately ten acres of raw land at Hellyer Avenue and Embedded Way for approximately $5,313 and nine acres of raw land at Hellyer Avenue and Piercy Road for approximately $4,877 from the Berg Group. The combined purchase price for the three R&D buildings and raw land totaled approximately $28,190. The Company acquired these properties by offsetting the purchase price by approximately $9,217, the amount of the prior distributions received by BBE that had been paid to RPC by the Company and accrued interest pursuant to the judgment in the Republic Litigation, and approximately $7,494, the amount the Berg Group was obligated to pay toward the construction of an R&D building in connection with the Company’s 2001 acquisition of 245 Caspian Drive in Sunnyvale, California. The Company issued an unsecured short-term note payable in the principal amount of approximately $11,479 representing the remaining portion of the purchase price. The note had an interest rate of LIBOR plus 1.75%, and matures July 15, 2012. The Company paid the note in full in March 2012. Total interest expense on the note was approximately $9 for the three months ended March 31, 2012. The transaction was approved by the Independent Directors Committee of the Company’s Board of Directors.

During the first three months of 2012, the Company issued two short-term notes payable to the Berg Group in connection with property acquisitions and quarterly dividend distributions. The interest rate on the two notes was LIBOR plus 1.75%. The aggregate loan amount totaled approximately $13,446. The Company repaid approximately $13,457 to the Berg Group, which included accrued interest. For the three months ended March 31, 2012, interest expense incurred in connection with those short-term notes payable was approximately $11.

During the first three months of 2012 and 2011, Carl E. Berg or entities controlled by him held financial interests in several companies that lease space from the operating partnerships, which include companies where Mr. Berg has a greater than 10% ownership interest. These related tenants contributed approximately $424 and $256 in rental income for the three months ended March 31, 2012 and 2011, respectively.

Under the Company’s charter, bylaws and agreements with the Berg Group, the individual members of the Berg Group are prohibited from acquiring or holding shares of the Company’s common stock if such acquisition would result in their beneficial ownership percentage of the Company’s common stock causing the Company to violate any REIT qualification requirement. Currently their share ownership is below a level at which rent from related tenants would be excluded in determining compliance with REIT qualification tests.

Until February 2012, the Berg Group had an obligation to pay approximately $7,494 toward the construction of  an approximately 75,000 to 90,000 square foot building in connection with the Company’s 2001 acquisition of 245 Caspian in Sunnyvale, which consists of approximately three acres of unimproved land. In connection with the Company’s multiple property acquisitions from the Berg Group on February 1, 2012 (see above), that obligation was applied to partially offset the purchase price, as described above.

The Company currently leases office space owned by Berg & Berg Enterprises for the Company’s headquarters. Rental amounts and overhead reimbursements paid to Berg & Berg Enterprises were $30 for the three months ended March 31, 2012 and 2011.

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Note 8 - Real Estate Asset Held for Sale/Discontinued Operations

3 Months Ended

Mar. 31, 2012

Real Estate Assets Held For Sale Discontinued Operations [Text Block]

8.    Real Estate Assets Held for Sale/Discontinued Operations

The real estate sales provisions of the Property, Plant, and Equipment Topic of the FASB ASC 360 address financial accounting and reporting for the impairment and disposal of long lived assets. In general, income or loss attributable to the operations and sale of property and the operations related to property held for sale is classified as discontinued operations in the condensed consolidated statements of operations. Prior period condensed consolidated statements of operations presented in this report have been reclassified to reflect the income or loss related to properties that were sold and properties that were under contract to be sold and presented as discontinued operations in 2012. All periods presented in this report will likely require further reclassification in future periods if there are properties held for sale or if property sales occur.

As of March 31, 2012, there were eight vacant properties under contract to be sold or otherwise disposed of which would qualify as assets held for sale and presented as discontinued operations. In addition, the Company sold six vacant properties in the first quarter of 2012, which had previously been recorded as assets held for sale and qualified as discontinued operations. In the fourth quarter of 2011, the Company sold one vacant R&D building which qualified as discontinued operations. Condensed results of operations for these properties for the three months ended March 31, 2012 and 2011, are as follows:

	Three Months Ended March 31,
	2012			2011
	(dollars in thousands)
	(unaudited)
Operating revenues:
Rental income	$	7		$	54
Tenant reimbursements		-			26
Other income		2			99
Total operating revenues		9			179
Operating expenses:
Property operating, maintenance and real estate taxes		166			312
Depreciation and amortization		-			336
Total operating expenses		166			648
Net loss attributable to discontinued operations		(157	)		(469	)
Net gain from disposal of discontinued operations		5,519			-
Income (loss) from discontinued operations	$	5,362		$	(469	)

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Note 9 - Subsequent Events

3 Months Ended

Mar. 31, 2012

Subsequent Events [Text Block]

9.    Subsequent Events

On March 19, 2012, the Company declared dividends for the first quarter 2012. On April 5, 2012, the Company paid dividends of $0.22 per share of common stock to all common stockholders of record as of March 30, 2012. A portion of the total dividend in the amount of $0.13 per share represented payment of the regular quarterly dividend and the remaining $0.09 per share represented an additional special dividend payment. On the same date, the operating partnerships paid a distribution of $0.22 per O.P. unit to all O.P. unit holders. Aggregate dividends and distributions amounted to approximately $23,163.

On April 30, 2012, the Company completed the sale of four R&D buildings consisting of approximately 145,000 rentable square feet located at 1490-1520 McCandless Drive, 1525-1555 McCandless Drive, 1575-1595 McCandless Drive and 1600 McCandless Drive in Milpitas, California. On the total cash sales price of $19,350, the Company will recognizea gain of approximately $8,697 and classify it as a gain from disposal of discontinued operations.

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net income	$ 13,253	$ 9,936
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,991	5,827
Gain from disposal of properties classified as discontinued operations	(5,519)
Equity in (earnings) loss of unconsolidated joint venture	(114)	8
Distributions from unconsolidated joint venture	97	75
Interest earned on restricted cash		(17)
Lease termination fee related to restricted cash		10,865
Stock-based compensation expense	1	14
Changes in operating assets and liabilities, net of liabilities assumed:
Deferred rent	201	635
Other assets	3,828	(250)
Interest payable	(29)	(17)
Security deposits	49	(190)
Prepaid rent and deferred revenue	(501)	(1,758)
Accounts payable and accrued expenses	478	4,335
Net cash provided by operating activities	17,735	29,463
Cash flows from investing activities:
Improvements to real estate assets	(176)	(926)
Net proceeds from sale of real estate	16,562
Purchase of real estate	(11,479)
Proceeds received from note receivable	1,743
Net cash provided by (used in) investing activities	6,650	(926)
Cash flows from financing activities:
Principal payments on mortgage notes payable	(3,786)	(3,588)
Principal payments on mortgage note payable (related parties)	(153)	(141)
Proceeds from note payable (related parties)	13,457
Payments on note payable (related parties)	(13,457)
Payments on note payable		(10,776)
Net repayments on revolving line of credit	(3,305)
Distributions paid to noncontrolling interests	(11,355)	(12,592)
Dividends paid to common stockholders	(2,936)	(3,320)
Net cash used in financing activities	(21,535)	(30,417)
Net increase (decrease) in cash and cash equivalents	2,850	(1,880)
Cash and cash equivalents, beginning of period		3,988
Cash and cash equivalents, end of period	2,850	2,108
Supplemental information:
Cash paid for interest	5,016	5,358
Supplemental schedule of non-cash investing and financing activities:
Debt incurred in connection with property acquisitions	11,479
Note receivable received from sale of real estate	18,780
Issuance of common stock upon conversion of O.P. units	$ 821	$ 1,604

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Note 5 - Net Income Per Share

3 Months Ended

Mar. 31, 2012

Earnings Per Share [Text Block]

5.    Net Income Per Share

Basic net income available to common stockholders per share is computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding for the period. Net income available to common stockholders is calculated by taking total net income and deducting the net income attributable to noncontrolling interests in each of the underlining operating partnerships. Diluted net income available to common stockholders per share is computed by dividing net income available to common stockholders by the sum of the weighted-average number of common shares outstanding for the period plus the assumed exercise of all dilutive securities using the treasury stock method.

The computation for weighted average shares is detailed below:

	Three Months Ended March 31,
	2012		2011
Weighted average shares outstanding (basic)		22,637,668		22,288,103
Incremental shares from assumed option exercise		519,786		117,173
Weighted average shares outstanding (diluted)		23,157,454		22,405,276

At March 31, 2012, outstanding options to purchase 702,500 shares of common stock were excluded from the computation of diluted net income available to common stockholders per share under the treasury stock method for the three months ended March 31, 2012, because the option exercise price was greater than the weighted average closing price of the Company’s common stock during the period. The outstanding O.P. units which are exchangeable at the unit holder’s option, subject to certain restrictions on conversions, for shares of common stock on a one-for-one basis have been excluded from the diluted net income per share calculation. The total number of O.P. units outstanding at March 31, 2012 and 2011, was 82,618,015 and 82,915,265, respectively.