N.Y. Real Prop. Tax Law § 455

§ 455. Exemption option. Notwithstanding any provision of this title\nto the contrary, real property owned by one or more persons where one of\nsuch owners qualifies for a real property tax exemption pursuant to\nsection four hundred fifty-nine-c or four hundred sixty-seven of this\ntitle, and another of such owners qualifies for a different tax\nexemption pursuant to such sections of this title, such owners shall\nhave the option of choosing the one exemption which is most beneficial\nto such owners. Such owners shall not be prohibited from taking one such\nexemption solely on the basis that such owners qualify for more than one\nexemption and therefore are not eligible for any exemptions.\n