Amend the IBC by adding a new Section 101.4.7 to read as follows:
101.4.7 Existing Building. The provisions of the International Building Code, International Fire Code, International Plumbing Code, International Mechanical Code, International Fuel Gas Code, International Residential Code, International Energy Conservation Code and NFPA 70 (NEC) shall apply to matters governing the repair, alteration, change of occupancy, addition to and relocation of existing buildings. Alterations to any building or structure shall comply with the requirements of the code for new construction. Alterations shall be such that the existing building or structure is no less complying with the provisions of this code than the existing building or structure was prior to the alteration.
Buildings and structures, and parts thereof, shall be maintained in a safe and sanitary condition. Devices or safeguards which are required by this code shall be maintained in conformance with the code edition under which installed. The owner or owner's designated agent shall be responsible for the maintenance of the buildings and structures. To determine compliance with this Subsection, the Building Official shall have the authority to require a building or structure to be re-inspected. The requirements of this Section shall not provide the basis for removal or abrogation of the fire protection and safety systems and devices in existing structures.
The provisions of this code related to the construction, repair, alteration, restoration and movement of structures, and changes of occupancy shall not be mandatory for historic buildings where such buildings are determined by the Building Official to not constitute a distinct life safety hazard.
No change shall be made in the use or occupancy of any building that would place the building in a different division of the same group of occupancies or in a different group of occupancies, unless such building is made to comply with the requirements of this code for such division or group of occupancies. Subject to the approval of the Building Official, the use or occupancy of existing buildings shall be permitted to be changed and the building is allowed to be occupied for the purpose in other groups, provided the new or proposed use is less hazardous, based on life and fire risk, than the existing use. A certificate of occupancy shall be issued where it has been determined that the requirements for the new occupancy classification have been met.