Permit required. No building, structure or part thereof shall be erected, raised, moved, extended, enlarged, altered or demolished until a permit has been granted by the Construction Official. A construction permit shall be conditional until a foundation survey is made at the time the foundation is in place. At such time, the applicant shall submit an accurate foundation survey to the Construction Official for his review for compliance with the zoning regulations. This survey shall be sealed by a licensed surveyor and shall show the external dimensions of the foundation, the distances from its property lines and the elevation of the top of the foundation. Following his approval of the foundation survey, the Construction Official shall validate the permit for the completion of the building. A waiver of the requirement for a survey may be granted where the Construction Official is satisfied that the completed foundation meets the setback requirement.