Procedures for a certificate of occupancy. Following the completion of the construction, reconstruction or alteration of any building, or for any change in the use of the structure the applicant shall transmit by registered mail to the Zoning Officer a letter stating that such construction has been completed or that a new use has been proposed. Within seven days of the receipt of this letter, the Zoning Officer shall make all necessary inspections of the completed structure and proposed use to determine the conformance with this chapter. A certificate of occupancy shall be issued by the Construction Official only if the Zoning Officer finds that the construction and proposed use comply with all the requirements and provisions of this chapter or the approval granted to the applicant.