Permit required. No sign, other than a residential nameplate or a sign exempted from the permitting requirements of this section as described herein, shall be erected or placed in the City of Dover without a sign permit. Said permit shall be issued by the Zoning Administrator, provided that the sign meets all the regulations of this section, after the submission of an application and a set of plans to an appropriate scale, showing site location, dimensions of any newly proposed and existing sign on the premises, method of illumination, if any, and types of materials to be used in construction. Replacement of existing signs and support structures, where the area, location or materials are being altered, shall require a permit, and such replacement shall conform to the regulations of this section.