The code must be enforced in a municipality that has more than 4,000 residents. The code must be enforced through inspections that comply with the code through any of the following means:
1. Building officials. Building officials and local code enforcement officers;
2. Interlocal agreements. Interlocal agreements with other municipalities that share the use of building officials certified in building standards pursuant to Title 10, section 9723;
3. Contractual agreements. Contractual agreements with county or regional authorities that share the use of building officials certified in building standards pursuant to Title 10, section 9723; and
4. Third-party inspectors. Reports from 3rd-party inspectors certified pursuant to Title 10, section 9723 submitted to the building official prior to obtaining a certificate of occupancy in section 2357‑A that are obtained pursuant to independent contractual arrangements between the building owner and 3rd-party inspector or the municipality and 3rd-party inspector.