N.Y.C. Admin. Code § 28-501.1.1: § 28-501.1.1 Other permits notwithstanding.

Where a sign maintenance permit has been established by the commissioner pursuant to section 28-501.1 such permit shall be required for all signs maintained in the areas described in such section 28-501.1 and not otherwise excluded under section 28-501.6, whether or not a work permit is required and/or has been issued for the installation, alteration or erection of such sign pursuant to chapter 1 of this title.