Whenever a zoning plan has been adopted and filed by the Council and Board, the Board, upon the recommendations of the Commission, is hereby authorized and empowered to establish for the area over which it exercises zoning jurisdiction a building code and other construction codes including, but not limited to, a plumbing code, an electrical code and an air conditioning and refrigeration code. Such building regulations and construction codes shall be administered and enforced by the County Inspecting Officer appointed by the Board.

Regulations authorized by this section shall not be adopted, changed, or amended by the Board until a public hearing has been held thereon by the Commission.