Permits. Signs, ground signs, roof signs, wall signs, pole signs, projecting signs, marquee signs, electric signs, grouping of letter or words, poster boards, billboards, when exceeding an area of 3 1/2 square feet face surface of the sign, shall not be erected, constructed or altered, except as provided by this code, and until a permit is obtained from the Building Commissioner. No permit shall be granted until an application has been properly presented with plans and specifications accompanying the application, showing the intended location, dimensions, materials to be used, weight, details of the sign construction, all of which shall have been approved by the Building Commissioner. No portable or temporary sign shall be placed upon any property unless a permit is first obtained and must be removed by the applicant within the time limit set forth in the permit.