No board, agency, officer or employee of the City shall issue, grant or approve any permit, license or certificate or other authorization (excluding conditional uses, variances and other lawful authorization by the Planning Board or Board of Adjustment) for any construction, reconstruction, alteration, enlargement or moving of any building or for any use of any land or building that would not be in full compliance with the provisions of this chapter. Any such permit, license, certificate or other authorization issued, granted or approved in violation of the provisions of this chapter shall be null and void and of no effect without the necessity of any proceedings for revocation or nullification thereof, and any work undertaken or use established pursuant to any such permit, license, certificate or other authorization shall be unlawful.