N.Y. Real Prop. Acts. Law § 257

§ 257. Covenants bind representatives of grantor and mortgagor and\ninure to the benefit of whom. All covenants contained in any grant or\nmortgage of real estate bind the heirs, executors, administrators,\nsuccessors and assigns, of the grantor or mortgagor, and inure to the\nbenefit of the heirs, executors, administrators, successors and assigns\nof the grantee or mortgagee in the same manner and to the same extent,\nand with like effect as if such heirs, executors, administrators,\nsuccessors and assigns were so named in such covenants, unless otherwise\nin said grant or mortgage expressly provided.\n