Exhibit 31.1**CHIEF EXECUTIVE OFFICER CERTIFICATION**I, Terry Considine, certify that:1. I have reviewed this quarterly report on Form 10-Q of AIMCO Properties, L.P.; 2. Based on my knowledge, this report does not contain any untrue statement of amaterial fact or omit to state a material fact necessary to make the statementsmade, in light of the circumstances under which such statements were made, notmisleading with respect to the period covered by this report; 3. Based on my knowledge, the financial statements, and other financial informationincluded in this report, fairly present in all material respects the financialcondition, results of operations and cash flows of the registrant as of, and for,the periods presented in this report; 4. The registrant’s other certifying officer(s) and I are responsible for establishingand maintaining disclosure controls and procedures (as defined in Exchange ActRules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (asdefined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: (a) Designed such disclosure controls andprocedures, or caused such disclosurecontrols and procedures to be designedunder our supervision, to ensure thatmaterial information relating to theregistrant, including its consolidatedsubsidiaries, is made known to us byothers within those entities,particularly during the period inwhich this report is being prepared;  (b) Designed such internal control overfinancial reporting, or caused suchinternal control over financialreporting to be designed under oursupervision, to provide reasonableassurance regarding the reliability offinancial reporting and thepreparation of financial statementsfor external purposes in accordancewith generally accepted accountingprinciples;  (c) Evaluated the effectiveness of theregistrant’s disclosure controls andprocedures and presented in thisreport our conclusions about theeffectiveness of the disclosurecontrols and procedures, as of the endof the period covered by this reportbased on such evaluation; and  (d) Disclosed in this report any change inthe registrant’s internal control overfinancial reporting that occurredduring the registrant’s most recentfiscal quarter (the registrant’sfourth fiscal quarter in the case ofan annual report) that has materiallyaffected, or is reasonably likely tomaterially affect, the registrant’sinternal control over financialreporting.5. The registrant’s other certifying officer(s) and I have disclosed, based on ourmost recent evaluation of internal control over financial reporting, to theregistrant’s auditors and the audit committee of the registrant’s board ofdirectors (or persons performing the equivalent functions): (a) All significant deficiencies andmaterial weaknesses in the design oroperation of internal control overfinancial reporting which arereasonably likely to adversely affectthe registrant’s ability to record,process, summarize and reportfinancial information; and  (b) Any fraud, whether or not material,that involves management or otheremployees who have a significant rolein the registrant’s internal controlover financial reporting.Date:November 5, 2007         /s/ Terry Considine   Terry Considine                                                                          Chairman and Chief Executive Officer