N.Y. Comp. Codes R. & Regs. tit. 20, § 575.9
(b) The exemption for certain governmental organizations or entities does not extend to the grantee: that is, if the exempt governmental entity conveys title to real property to a nonexempt individual or entity, there will be a tax due which is payable by the grantee. The exemption for governmental organizations or entities includes the following:
(c) In addition to the exemptions described in subdivision (b) of this section, certain transactions are not subject to the real estate transfer tax. These include:
(10) conveyances of an option or contract to purchase real property which include the right to use or occupy such property where:
Tax Law, § 1405