EXHIBIT 32.1

CERTIFICATION OF CHAIRMAN OF THE BOARD AND CHIEF EXECUTIVE OFFICER

PURSUANT TO 18 U.S.C. 1350

(SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002)

The undersigned, Fredric H. Gould, Chairman of the Board and Chief Executive Officer of One Liberty Properties, Inc., (the "Registrant"), does hereby certify, pursuant to 18 U.S.C. 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that based upon a review of the Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2007 of the Registrant, as filed with the Securities and Exchange Commission on the date hereof (the "Report"):

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Date: November 8, 2007	/s/ Fredric H. Gould
	Fredric H. Gould Chairman of the Board and Chief Executive Officer