Filed Pursuant to Rule 433
Issuer Free Writing Prospectus
dated June 18, 2007
Registration No. 333-135110

HRPT PROPERTIES TRUST

This information supplements the information contained in the preliminary prospectus
supplement dated June 18, 2007 to prospectus dated June 19, 2006.

Pricing Term Sheet

Size:

 

$250,000,000

 

 

Coupon (Interest Rate):

 

6.25% per annum

 

 

Security:

 

6.25% Senior Notes due 2017

 

 

Interest Payment Dates:

 

June 15 and December 15, commencing December 15, 2007

 

 

Maturity:

 

June 15, 2017

 

 

Price to Public:

 

99.790% of principal amount, plus accrued interest, if any, from the date of original issuance

Trade Date:

 

June 18, 2007

 

 

Settlement Date:

 

T+5; June 25, 2007

 

 

Net Proceeds:

 

$247,850,000 (before expenses associated with the transaction)

 

 

Redemption Provision:

 

Make-whole call at any time based on U.S. Treasury plus 0.20% (twenty one-hundredths of one percent). If the notes are redeemed on or after December 15, 2016, the redemption price will not include a make-whole amount.

Yield to maturity:

 

6.279%

 

 

Spread to Benchmark Treasury:

 

112 basis points

 

 

Benchmark Treasury:

 

U.S. Treasury 4.50% due May 2017

 

 

Benchmark Treasury Price and Yield:

 

94-30; 5.159%

 

 

Expected Ratings (Moody’s / S&P):

 

Baa2 (stable) / BBB (stable)

 

 

CUSIP:

 

40426WAU5

 

 

 

 

 

 

 

Joint Book-Running Managers:

 

Wachovia Capital Markets, LLC

 

$75,012,000

 

 

Banc of America Securities LLC

 

$37,500,000

 

 

RBC Capital Markets Corporation

 

$37,500,000

 

 

 

 

 

Joint Lead Managers:

 

Merrill Lynch, Pierce, Fenner & Smith

 

$17,500,000

 

 

      Incorporated

 

 

 

 

Morgan Stanley & Co. Incorporated

 

$17,500,000

 

 

UBS Securities LLC

 

$17,500,000

 

 

 

 

 

Co-Managers:

 

BMO Capital Markets Corp.

 

$3,392,000

 

 

BNY Capital Markets, Inc.

 

$3,392,000

 

 

Calyon Securities (USA) Inc.

 

$3,392,000

 

 

Comerica Securities, Inc.

 

$3,392,000

 

 

Ferris, Baker Watts, Incorporated

 

$3,392,000

 

 

Greenwich Capital Markets, Inc.

 

$3,392,000

 

 

Janney Montgomery Scott LLC

 

$3,392,000

 

 

Morgan Keegan & Company, Inc.

 

$3,392,000

 

 

Oppenheimer & Co. Inc.

 

$3,392,000

 

 

Piper Jaffray & Co.

 

$3,392,000

 

 

PNC Capital Markets LLC

 

$3,392,000

 

 

SG Americas Securities, LLC

 

$3,392,000

 

 

Stifel, Nicolaus & Company, Incorporated

 

$3,392,000

 

 

SunTrust Capital Markets, Inc.

 

$3,392,000

 

The issuer has filed a registration statement (including a prospectus) with the Securities and Exchange Commission, or SEC, for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement, the prospectus supplement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the issuer or any underwriter participating in the offering will arrange to send you the prospectus supplement and accompanying prospectus if you request it by contacting Wachovia Capital Markets, LLC 1525 W. WT Harris Blvd, Mail Code NC0675, Charlotte, NC 28262 - telephone (866) 289-1262 or syndicate.ops@wachovia.com.

Any disclaimers or other notices that may appear below are not applicable to this communication and should be disregarded.  Such disclaimers or other notices were automatically generated as a result of this communication being sent via Bloomberg or another email system.