No board, agency, officer or employee of the City shall issue, grant or approve any permit, license, certificate or other authorization 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 text 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, and no action shall be taken by any board, agency, officer or employee of the City purporting to validate any such violation.