N.Y. Private Housing Finance Law § 115

§ 115. Limitation on changes. It shall be unlawful during the period\nof tax exemption, granted pursuant to section one hundred twenty-five of\nthis article, for any redevelopment company or any successor in interest\nto its title to a project or any part thereof to change or modify any\nfeature of a project for which approval of the planning commission is\nrequired by this article, without the approval of such commission,\nexcept by a three-quarters vote of the local legislative body.\n