Exhibit 31.2

Reckson Operating Partnership, L. P.

Certification of Michael Maturo, Executive Vice President, Treasurer and Chief Financial Officer
of Reckson Associates Realty Corp., the Sole General Partner of the Registrant,

Pursuant to Rule 13a  14(a)/15(d)  14(a)

I, Michael Maturo,
certify that:

|1. | I have reviewed this quarterly report on Form 10-Q of Reckson Operating Partnership, L. P.;                                                                                                                                                                                                                                         
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|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;                          
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|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;                                             
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|4. | The Registrants other certifying officer 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:
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|   | b)                                                                                                                                                                                                                                                                                                                                  
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|   | c)                                                                                                                                                                                                                                                                                                                                  
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|   | d)                                                                                                                                                                                                                                                                                                                                  
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|5. |                                                                                                                                                                                                                                                                                                                                     
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|   | a)                                                                                                                                                                                                                                                                                                                                  
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|   | b)                                                                                                                                                                                                                                                                                                                                  

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|Date: November
        7, 2005 | /
    s / Michael Maturo                                                                                                                                     
|                               |                                                                                                                                                              
|                               | Michael Maturo
Executive Vice President, Treasurer
and Chief Financial Officer of Reckson Associates Realty Corp.,
the sole general partner of the Registrant

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