No building hereafter erected and no building hereafter altered shall be occupied in whole or in part until a certificate of occupancy shall have been issued by the Inspector of Buildings, provided that temporary permission to occupy part of such buildings may be issued by the Inspector of Buildings, if, in his opinion, such temporary occupancy or use would not in any way jeopardize life, health or property.

The certificate of occupancy shall state the compliance with approved plans and specifications, the purpose for which the building may be used in its several parts, the maximum permissible live loads on the several floors, the number of persons that may be accommodated in the several stores in case such numbers are limited by any provisions of this chapter, or any other statute, and other special stipulations of the permit, if any. The Inspector of Buildings shall establish rules and regulations requiring written applications and such other requirements for the issuance of a certificate of occupancy as he may deem necessary. A certificate of occupancy may be temporary or for a term or permanent, but subject to cancellation for cause.

No change of occupancy or use shall be made in any building or part thereof now existing or hereafter erected or altered or with respect to any land unless a certificate of occupancy is issued by the Inspector of Buildings certifying that such building or land and the use thereof conforms to the provisions of this chapter and other statutes and regulations affecting such changed occupancy or use.