B.
No change shall be made in the use or type of occupancy of an existing building unless a certificate of occupancy authorizing such change shall have been issued by the Building Inspector.
C.
The owner or his agent shall make application for a certificate of occupancy. Accompanying this application and before the issuance of a certificate of occupancy, there shall be filed with the Building Inspector an affidavit of the registered architect or licensed professional engineer who filed the original plans or of the registered architect or licensed professional engineer who supervised the construction of the work or of the superintendent of construction who supervised the work for which the certificate of occupancy is sought. This affidavit shall state that the deponent has examined the approved plans of the structure for which a certificate of occupancy is sought, that the structure has been erected in accordance with approved plans and, as erected, complies with the law governing building construction except insofar as variations therefrom have been legally authorized. Such variation shall be specified in the affidavit.