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