N.Y. General City Law § 35-a

§ 35-a. Limitation of time for revocation of permit. An action or\nproceeding to revoke a building permit on the ground that the building\nerected pursuant thereto stands wholly or partly within the bed of any\nstreet or highway shown on the official map or plan of a city must be\ncommenced within fifteen years from the time of the issuance of such\npermit; but if at the time this act takes effect more than fourteen\nyears have elapsed since the time of the issuance of the permit, an\naction or proceeding to revoke the permit on such ground must be\ncommenced within one year from the time this act takes effect. If no\naction or proceeding is commenced within the time limited, the permit\nshall be deemed as valid as if it had been issued pursuant to the\nprovisions of section thirty-five of this chapter.\n