8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): May 8, 2007

SENIOR HOUSING PROPERTIES TRUST

Maryland	001-15319	04-3445278
(State of organization)	(Commission file number)	(I.R.S. Employer Identification Number)

400 Centre Street, Newton, Massachusetts 02458

617-796-8350

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

ITEM 8.01.OTHER EVENTS.

On May 8, 2007, Senior Housing Properties Trust, or the Company, issued a press release announcing that its annual meeting of shareholders scheduled for May 8, 2007 has been adjourned until 10:00 a.m., Wednesday, May 30, 2007. A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS.

(d)      Exhibits

The Company hereby files the following exhibit:

99.1 Press Release dated May 8, 2007.

.

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 hereunto duly authorized.

SENIOR HOUSING PROPERTIES TRUST By: /s/ Richard A. Doyle
	Richard A. Doyle Treasurer and Chief Financial Officer

Date: May 10, 2007

EX-99.1

400 Centre Street, Newton, MA 02458-2076 tel: (617) 796-8350 fax: (617) 796-8349

Exhibit 99.1

FOR IMMEDIATE RELEASE
	Contact:
	Timothy Bonang
	Manager of Investor Relations
	(617) 796-8349
	www.snhreit.com

Senior Housing Properties Trust Annual Meeting

Adjourned To May 30, 2007

_________________________________

Newton, MA (May 8, 2007). The annual meeting of shareholders of Senior Housing Properties Trust (NYSE: SNH) which was scheduled for today has been adjourned until 10:00 a.m. on Wednesday, May 30, 2007. The adjourned meeting will convene at SNH’s offices at 400 Centre Street, Newton, MA 02458.

Senior Housing Properties Trust is a real estate investment trust which owns hospitals, nursing homes and independent and assisted living communities throughout the United States.

(END)

A Maryland Real Estate Trust with transferable shares of beneficial interest listed on the New York Stock Exchange.
No shareholder, Trustee or officer is personally liable for any act or obligation of the Trust.