Missouri Building and Residential Codes

Municipalities and counties in Missouri may independently adopt any cycle year of the International Residential Code (IRC) and International Building Code (IBC).  Missouri municipalities and counties typically adopt codes on a 6-year cycle, rather than the 3-year ICC cycle.

Building Code Compliance Software for Missouri

Plan Analyst code compliance software programs make it easy for building officials, architects and other designers to quickly perform commercial and residential building code plan reviews / code studies.  Plan Analyst for the IBC and Plan Analyst for the IRC simplifies the plan review / code study process enabling compliance to specific code years.  This proven software allows modifications to accommodate local amendments, where applicable.  Users have the ability to add code requirements and to add to the checklist.  Changes can be made permanent by changing the data file using the setup section of Plan Analyst, or specific reports can be edited for special conditions.

Plan Analyst Calculators: Deck – Sign – Beam & Column

Plan Analyst Deck, Sign and Beam & Column Calculators are additional simple and effective design and code review software tools that will quickly become your go-to resources when working on associated tasks.

Users of Plan Analyst in Missouri have included:

City of NixaCharleville Design, LLC
City of PlattsburgGould Evans Associates
City of St. JosephRosemann & Associates P.C.
City of WarrensburgSapp Design Associates
City of WarsawTwin Decking, LLC
City of WentzvilleUniversity of Missouri Healthcare

Building and Residential Code Resources in Missouri

Energy Code Compliance Software for Missouri

Visit the U.S. Department of Energy website to see the latest on energy code adoption in Missouri, including the use of COMcheck and REScheck Energy Code compliance software. COMcheck enables architects, builders, designers, and contractors to determine whether new commercial or high-rise residential buildings, additions, and alterations meet the requirements of the IECC and ASHRAE Standard 90.1.  REScheck product enables builders, designers, and contractors to determine whether new homes, additions, and alterations meet the requirements of the IECC or a number of state energy codes.

The “Building Codes Assistance Project” also provides information on Missouri’s building energy codes.

FEMA Building Code Adoption Tracking

The FEMA Building Code Adoption Tracking program reports on the status of hazard-resistant building code adoption in each state. Missouri is in FEMA Region 7. Read the 2023 Region 7 fact sheet showing the annual metric of the percent of communities adopting hazard-resistant building codes in Missouri.


American Institute of Architects – AIA Missouri represents architects in the state.  There are around 5,000 registered and reciprocal architects in Missouri.

Missouri has ICC Chapters throughout the State.

Missouri code adoption status on the ICC website