Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

PURSUANT TO SECITON 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned, being the Chief Executive Officer of AmeriVest Properties Inc., a Maryland real estate investment trust (the “Issuer”), hereby certifies that the Quarterly Report on Form 10-Q (the “Quarterly Report”) of the Issuer for the three and six months ended June 30, 2005, which accompanies this certification, fully complies with the requirements of Section 13(a) of the Securities Exchange Act of 1934 (15 U.S.C. §78 m(a)) and that the information contained in the Quarterly Report fairly presents, in all material respects, the financial condition and results of operations of the Issuer.

August 5, 2005
	By:	/s/ Charles K. Knight
		Charles K. Knight
		Chief Executive Officer

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