Dispositions

9 Months Ended

Sep. 30, 2015

Discontinued Operations and Disposal Groups [Abstract]

Real Estate Assets Held for Sale and Dispositions

Operating Property Dispositions

The following table summarizes the operating properties sold during the nine months ended September 30, 2015:

Location	Property Type	Month of Disposition	Number of Buildings	Rentable Square Feet
15050 NE 36th Street, Redmond, WA	Office	April	1	122,103
San Diego Properties - Tranche 1 (1)	Office	April	3	384,468
San Diego Properties - Tranche 2 (2)	Office	July	6	539,823
Total Dispositions			10	1,046,394

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(1) The San Diego Properties - Tranche 1 include the following: 10770 Wateridge Circle, 6200 Greenwich Drive, and 6220 Greenwich Drive.

(2) The San Diego Properties - Tranche 2 include the following: 6260 Sequence Drive, 6290 Sequence, Drive, 6310 Sequence Drive, 6340 Sequence Drive, 6350 Sequence Drive, and 4921 Directors Place.

The ten buildings encompassing 1,046,394 rentable square feet were sold for a gross sales price of $309.2 million, resulting in a gain on sale of $110.0 million.

Land Disposition

During the ninemonths ended September 30, 2015, the Company sold a land parcel located at 17150 Von Karman in Irvine, California for a gross sales price of $26.0 million, resulting in a gain on sale of $17.3 million.