Exhibit 31.1

Reckson Associates Realty Corp.

Certification of Scott H. Rechler, Chairman of the Board, Chief Executive Officer and President of the Registrant, 
Pursuant to Rule 13a  14(a)/15(d)  14(a)

I, Scott H. Rechler, certify
that:

| | 1. | I have reviewed this quarterly report on Form 10-Q of Reckson Associates Realty Corp.;                                                                                                                                                                                                                                              
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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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| |  | a) | designed such disclosure controls and procedures,
or caused such disclosure controls and procedures to be designed under
our supervision, to ensure that material information relating to the Registrant,
including its consolidated
subsidiaries, is made known to us by others within
those entities, particularly during the period in which this report is
being prepared;        
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| |  | b) | designed such internal control over financial
reporting, or caused such internal control over financial reporting to be designed
under our supervision, to provide reasonable assurance regarding the reliability
of financial reporting and the
preparation of financial statements for external
purposes in accordance with generally accepted accounting principles;               
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| |  | c) | evaluated the effectiveness of the Registrants
disclosure controls and procedures and presented in this report our conclusions
about the effectiveness of the disclosure controls and procedures, as of the
end of the period covered by
this report based on such evaluation; and                                                                                                   
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| |  | d) | disclosed in this report any change in the Registrants
internal control over financial reporting that occurred during theRegistrants
most recent fiscal quarter (the
Registrants fourth fiscal quarter in the case of an annual report) that
has
materially affected, or is reasonably likely to
materially affect, the Registrants internal control over financial reporting; and
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| | 5. | The Registrants other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrants auditors and the audit committee of the
Registrants board of directors (or persons performing the equivalent functions):
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| |  | a) | all significant deficiencies and material weaknesses
in the design or operation of internal control over financial reporting
which are reasonably likely to adversely affect the Registrants ability
to record, process, summarize and report financial information; and
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| |  | b) | any fraud, whether or not material, that involves
management or other employees who have a significant role in the  Registrants
internal control over financial reporting.                                                                                              
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Date: August 8, 2005

| | /s/
    Scott H. Rechler                                        
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| | Scott H. Rechler                                                
| | Chairman of the Board, Chief Executive
    Officer and President

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