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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
 Washington, D.C. 20549
 FORM
10-Q/A
 Amendment
No. 1
  þ
    
    QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
 For the quarterly period ended June 30, 2010
 OR
 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 numbers:
    
    1-13130 (Liberty Property Trust)
1-13132 (Liberty Property Limited Partnership)
 
 LIBERTY PROPERTY TRUST
LIBERTY PROPERTY LIMITED PARTNERSHIP
 (Exact name of registrants as specified in their governing documents)
 
 MARYLAND(Liberty Property Trust)PENNSYLVANIA(Liberty Property Limited Partnership)
    
    23-7768996
23-2766549(State or other jurisdiction of incorporation or organization)
    
    (I.R.S. Employer
Identification Number)500 Chesterfield Parkway 
Malvern, Pennsylvania
    
    19355(Address of Principal Executive Offices)
    
    (Zip Code)
  þ o
 þ o
  Large Accelerated Filer þ
    
    Accelerated Filer o
    
    Non-Accelerated Filer o
(Do not check if a smaller reporting company)
    
    Smaller Reporting Company o
 Yes o No þ




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Explanatory Note
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Liberty Property Trust/Liberty Property Limited Partnership
Form 10-Q for the period ended June 30, 2010
 Index
    
    PagePART II. OTHER INFORMATION
    
    
    45Item 6. Exhibits
    
    
    46Signatures for Liberty Property Trust
    
    
    48Signatures for Liberty Property Limited Partnership
    
    
    49Exhibit Index
    
    
    50Exhibit 10.18Exhibit 10.19Exhibit 31.1Exhibit 31.2Exhibit 31.3Exhibit 31.4Exhibit 32.1Exhibit 32.2Exhibit 32.3Exhibit 32.4
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PART II. OTHER INFORMATION
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Item 6. Exhibits
 Note to Exhibits: Exhibits 10.18 and 10.19 were filed with the Registrants Annual Report on Form
10-K for the fiscal year ended December 31, 2007, and were
refiled with this Quarterly Report on Form 10-Q solely to include
certain schedules and exhibits that were omitted from the exhibits as
originally filed.
Confidential treatment has been granted by the Securities and Exchange Commission with respect to
portions of these exhibits pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as
amended, and the Registrants have submitted, and subsequently
revised, an application for confidential treatment with respect
to portions of the schedules and exhibits that were added to the
exhibits as filed with the Quarterly Report on Form 10-Q. These
exhibits are being refiled in this Amendment No. 1 to Form 10-Q to
conform with the revised application.
 10.18 +
    
    Agreement of Limited Partnership of Liberty Washington, L.P. by and between Liberty
Washington Venture, LLC and New York State Common Retirement Fund dated as of October 4,
2007.10.19 +
    
    Contribution Agreement among New York State Common Retirement Fund and Liberty
Property Limited Partnership and Liberty Washington, L.P. dated October 4, 2007.12.1**
    
    Statement Re: Computation of Ratio of Earnings to Fixed
Charges and Ratio of Earnings to Combined Fixed Charges.31.1*
    
    Certification of the Chief Executive Officer of Liberty
Property Trust required by Rule 13a-14(a) under the
Securities Exchange Act of 1934.31.2*
    
    Certification of the Chief Financial Officer of Liberty
Property Trust required by Rule 13a-14(a) under the
Securities Exchange Act of 1934.31.3*
    
    Certification of the Chief Executive Officer of Liberty
Property Trust, in its capacity as the general partner of
Liberty Property Limited Partnership, required by
Rule 13a-14(a) under the Securities Exchange Act of 1934.31.4*
    
    Certification of the Chief Financial Officer of Liberty
Property Trust, in its capacity as the general partner of
Liberty Property Limited Partnership, required by
Rule 13a-14(a) under the Securities Exchange Act of 1934.32.1*
    
    Certification of the Chief Executive Officer of Liberty
Property Trust required under Rule 13a-14(b) of the
Securities Exchange Act of 1934, as amended. (This exhibit
shall not be deemed filed for purposes of Section 18 of
the Securities Exchange Act of 1934, as amended, or
otherwise subject to the liability of that section.
Further, this exhibit shall not be deemed to be
incorporated by reference into any filing under the
Securities Act of 1933, as amended, or the Securities
Exchange Act of 1934, as amended.)32.2*
    
    Certification of the Chief Financial Officer of Liberty
Property Trust required by Rule 13a-14(b) under the
Securities Exchange Act of 1934, as amended. (This exhibit
shall not be deemed filed for purposes of Section 18 of
the Securities Exchange Act of 1934, as amended, or
otherwise subject to the liability of that section.
Further, this exhibit shall not be deemed to be
incorporated by reference into any filing under the
Securities Act of 1933, as amended, or the Securities
Exchange Act of 1934, as amended.)32.3*
    
    Certification of the Chief Executive Officer of Liberty
Property Trust, in its capacity as the general partner of
Liberty Property Limited Partnership, required by
Rule 13a-14(b) under the Securities Exchange Act of 1934,
as amended. (This exhibit shall not be deemed filed for
purposes of Section 18 of the Securities Exchange Act of
1934, as amended, or otherwise subject to the liability of
that section. Further, this exhibit shall not be deemed to
be incorporated by reference into any filing under the
Securities Act of 1933, as amended, or the Securities
Exchange Act of 1934, as amended.)
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32.4*
    
    Certification of the Chief Financial Officer of Liberty Property
Trust, in its capacity as the general partner of Liberty Property
Limited Partnership, required by Rule 13a-14(b) under the Securities
Exchange Act of 1934, as amended. (This exhibit shall not be deemed
filed for purposes of Section 18 of the Securities Exchange Act of
1934, as amended, or otherwise subject to the liability of that
section. Further, this exhibit shall not be deemed to be
incorporated by reference into any filing under the Securities Act
of 1933, as amended, or the Securities Exchange Act of 1934, as
amended.)101.INS*
    
    XBRL Instance Document (furnished herewith).101.SCH*
    
    XBRL Taxonomy Extension Schema Document (furnished herewith).101.CAL*
    
    XBRL Taxonomy Extension Calculation Linkbase Document (furnished herewith).101.DEF*
    
    XBRL Taxonomy Extension Definition Linkbase Document (furnished herewith).101.LAB*
    
    XBRL Extension Labels Linkbase (furnished herewith).101.PRE*
    
    XBRL Taxonomy Extension Presentation Linkbase Document (furnished herewith).
 
 *
    
    Filed herewith.**
    
    Previously filed.+
    
    The Registrants have submitted an application for confidential treatment with respect to
portions of this exhibit pursuant to Rule 24b-2 under the Securities Exchange Act of 1934,
as amended.  47




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SIGNATURES
  LIBERTY PROPERTY TRUST
 /s/ WILLIAM P. HANKOWSKY
    
    November 24, 2010William P. Hankowsky
    
    DatePresident and Chief Executive Officer/s/ GEORGE J. ALBURGER, JR.
    
    November 24, 2010George J. Alburger, Jr.
    
    DateExecutive Vice President and Chief Financial Officer
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SIGNATURES
  LIBERTY PROPERTY LIMITED PARTNERSHIP
 BY:
    
    Liberty Property TrustGeneral Partner
 /s/ WILLIAM P. HANKOWSKY
    
    November 24, 2010William P. Hankowsky
    
    DatePresident and Chief Executive Officer/s/ GEORGE J. ALBURGER, JR.
    
    November 24, 2010George J. Alburger, Jr.
    
    DateExecutive Vice President and Chief Financial Officer
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EXHIBIT INDEX
 Note to Exhibits: Exhibits 10.18 and 10.19 were filed with the Registrants Annual Report on Form
10-K for the fiscal year ended December 31, 2007, and were
refiled with this Quarterly Report on Form 10-Q solely to include
certain schedules and exhibits that were omitted from the exhibits as
originally filed.
Confidential treatment has been granted by the Securities and Exchange Commission with respect to
portions of these exhibits pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as
amended, and the Registrants have submitted, and subsequently
revised, an application for confidential treatment with respect
to portions of the schedules and exhibits that were added to the
exhibits as filed with the Quarterly Report on Form 10-Q. These
exhibits are being refiled in this Amendment No. 1 to Form 10-Q to
conform with the revised application.
 EXHIBIT NO.
    
    DESCRIPTION10.18 +*
    
    
    Agreement of Limited Partnership of Liberty Washington, L.P. by and between Liberty
Washington Venture, LLC and New York State Common Retirement Fund dated as of October 4, 2007.10.19 +*
    
    
    Contribution Agreement among New York State Common Retirement Fund and Liberty Property
Limited Partnership and Liberty Washington, L.P. dated October 4, 2007.12.1**
    
    
    Statement Re: Computation of Ratio of Earnings to Fixed Charges and Ratio of Earnings
to Combined Fixed Charges.31.1*
    
    
    Certification of the Chief Executive Officer of Liberty Property Trust required by
Rule 13a-14(a) under the Securities Exchange Act of 1934.31.2*
    
    
    Certification of the Chief Financial Officer of Liberty Property Trust required by
Rule 13a-14(a) under the Securities Exchange Act of 1934.31.3*
    
    
    Certification of the Chief Executive Officer of Liberty Property Trust, in its
capacity as the general partner of Liberty Property Limited Partnership, required by
Rule 13a-14(a) under the Securities Exchange Act of 1934.31.4*
    
    
    Certification of the Chief Financial Officer of Liberty Property Trust, in its
capacity as the general partner of Liberty Property Limited Partnership, required by
Rule 13a-14(a) under the Securities Exchange Act of 1934.32.1*
    
    
    Certification of the Chief Executive Officer of Liberty Property Trust required under
Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended. (This exhibit shall
not be deemed filed for purposes of Section 18 of the Securities Exchange Act of
1934, as amended, or otherwise subject to the liability of that section. Further, this
exhibit shall not be deemed to be incorporated by reference into any filing under the
Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as
amended.)32.2*
    
    
    Certification of the Chief Financial Officer of Liberty Property Trust required by
Rule 13a-14(b) under the Securities Exchange Act of 1934, as amended. (This exhibit
shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act
of 1934, as amended, or otherwise subject to the liability of that section. Further,
this exhibit shall not be deemed to be incorporated by reference into any filing under
the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as
amended.)32.3*
    
    
    Certification of the Chief Executive Officer of Liberty Property Trust, in its
capacity as the general partner of Liberty Property Limited Partnership, required by
Rule 13a-14(b) under the Securities Exchange Act of 1934, as amended. (This exhibit
shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act
of 1934, as amended, or otherwise subject to the liability of that section. Further,
this exhibit shall not be deemed to be incorporated by reference into any filing under
the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as
amended.)
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EXHIBIT NO.
    
    DESCRIPTION32.4*
    
    
    Certification of the Chief Financial Officer of Liberty Property Trust, in its
capacity as the general partner of Liberty Property Limited Partnership, required by
Rule 13a-14(b) under the Securities Exchange Act of 1934, as amended. (This exhibit
shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act
of 1934, as amended, or otherwise subject to the liability of that section. Further,
this exhibit shall not be deemed to be incorporated by reference into any filing under
the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as
amended.)101.INS*
    
    XBRL Instance Document (furnished herewith).101.SCH*
    
    XBRL Taxonomy Extension Schema Document (furnished herewith).101.CAL*
    
    XBRL Taxonomy Extension Calculation Linkbase Document (furnished herewith).101.DEF*
    
    XBRL Taxonomy Extension Definition Linkbase Document (furnished herewith).101.LAB*
    
    XBRL Extension Labels Linkbase (furnished herewith).101.PRE*
    
    XBRL Taxonomy Extension Presentation Linkbase Document (furnished herewith).
 
 *
    
    Filed herewith.**
    
    Previously filed.+
    
    The Registrants have submitted an application for confidential treatment with respect to
portions of this exhibit pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as
amended.  51