**Exhibit31.1**

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**Reckson Associates  Realty Corp.**

**Certificationof Scott H. Rechler, Chairman of the Board, Chief Executive Officer and Presidentof 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 factnecessary        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 thisreport;                                                       |
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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 inwhich 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 accountingprinciples; |
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|   | c)                                                                                                                                                                                                                                                                                                                                                                       | evaluated        the effectivenessof the Registrant’s disclosure controls and procedures and presented inthis report our conclusions about the effectiveness of the disclosure controlsand procedures, as of the end of the period covered by this report based on suchevaluation; and |
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|   | d)                                                                                                                                                                                                                                                                                                                                                                       | disclosed        in thisreport any change in the Registrant’s internal control over financial reportingthat occurred during the Registrant’smost recent fiscal quarter (the Registrant’s fourth fiscal quarter in thecase of an annual report) that has materially affected, or is reasonably likelyto 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 equivalentfunctions):                                |
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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 significantrole in the Registrant’sinternal control over financial reporting. |
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|                      | /s/    Scott H. Rechler                                            |
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|                      | Scott H. Rechler                                                   |
|                      | Chairman of        the Board,Chief Executive Officer and President |
|                      |                                                               |
| Date: November    7, 2005 |                                                               |

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