CODE COMPLIANCE & Permits
Missouri's primarily uses model building codes:
- International Building Code (IBC)
Missouri adopts and publishes its own version of the building code, which is based on the IBC. This means that while it's rooted in the IBC, there may be specific state-level amendments or variations.
For Permits and Compliance: Contact your local city or county building department to find out which specific code version (like the 2021 IBC, for example) they have adopted.
climate zone
CZ 4 (Climate Zone 4 )
- Location: This zone covers approximately the southern half of Missouri.
- Climate: It is characterized as a "Mixed-Humid" climate, which means it experiences hot, humid summers and moderately cold winters.
CZ 5 (Climate Zone 5)
- Location: This zone covers the northern half of the state, stretching down into the central portion.
- Climate: It is characterized as a "Mixed-Humid" climate but with a colder heating season than Zone 4.
How zones are used
Governing regulations:
The climate zones are used by builders and contractors to determine the insulation requirements for different parts of a home, such as the walls, attic, and foundation.
Specific requirements:
The separation of Missouri into two IECC zones means that construction projects in the northern half of the state must meet more stringent energy code requirements for insulation and heating efficiency compared to the southern half.