(A)   No construction, enlargement, alteration, repair, remodeling or moving of any building structure, part of a structure or building or of any equipment, shall be undertaken prior to the issuance of a permit thereof by the Inspections Department.  No permit shall be issued until plans and specifications showing the proposed work in necessary detail have been submitted to the Inspections Department and it has been determined from examination of such plans and specifications that they give assurance that the work will conform to the provisions of this building ordinance.  If a permit is denied, the applicant may submit revised plans and specifications without payment of additional fee.  If, in the course of the work, it is found necessary to make any change from the plans and specifications on which a permit has been issued, amended plans and specifications shall be submitted and a supplementary permit subject to the same conditions applicable to the original application for permit, shall be issued to cover the change, provided, however, that no supplementary building permit as provided herein shall be required if the estimated cost of such construction, enlargement, alteration, repair, remodeling or moving does not exceed $50.