The provisions of Chapter 34 of the Ohio Building Code shall control the alteration, repair, addition, maintenance and change of occupancy of any existing structure.
   The occupancy of any structure currently existing on the date of adoption of this Code shall be permitted to continue without change provided there are no orders of the Building Official pending, no evidence of fraud, or no serious safety or sanitation hazard. When requested, such approvals shall be in the form of a “Certificate of Occupancy for an Existing Building” in accordance with Section 111.2 of the Ohio Building Code.
   Buildings constructed in accordance with plans which have been approved prior to the effective date of this Code are existing buildings.
(OBC 102.7)