International Residential Code
Missouri leaves the IRC to cities and counties
Missouri leaves the IRC to cities and counties. Adopted by Local governments (cities, counties). The legal citation is RSMo 67.280.
Record of adoption
Edition in force
Local adoption
Partial
- Legal citation
- RSMo 67.280
- Adopted by
- Local governments (cities, counties)
- Second reading
- Applies
- Local option
No state IRC adoption found in the Code of State Regulations searches or agency pages reached. AWC lists a 2015 IRC for Missouri, but no primary source for it was found.
How Missouri adopts the IRC
Each local jurisdiction adopts the IRC by ordinance under RSMo 67.280. No state rule or statute sets an edition.
Cycle. irregular; set by each local jurisdiction
Laws, rulings, and other actions
- LegislationSB 743, Missouri Building Codes Act2025 regular session, Sen. Brown
Would create state building, electrical, energy, fire and other codes from ICC and other model codes, require existing local codes to conform, and require commission approval of local amendments.
Pending (introduced Feb 24, 2025, per a secondary tracker)
senate.mo.gov (opens in a new tab) - UndatedLegislationSB 1431, Missouri Building Codes2026 regular session, Sen. Henderson
Would establish Missouri Building Codes based on ICC and other model codes, with commission approval of local amendments and implementation by Aug 28, 2028.
Pending (introduced)
senate.mo.gov (opens in a new tab) - UndatedLegislationHB 3466, Missouri Building Codes Act2026 regular session, Rep. Hruza
Would require jurisdictions with an existing building code to adopt the state codes by rule, allow local amendments, and let local bodies adopt by reference.
Pending (introduced)
documents.house.mo.gov (opens in a new tab)
How it was checked
Partial
Researched in the state’s own record. The seal stays broken until the passage is on file word for word.
Read twice: a second, blind reading of the state’s record agreed with the first on .
The state’s record was last read on , from three source pages.
Evidence 2 sources
Sources for the record itself come first, the state’s own records ahead of others. A label marks a source about something else, such as an exception. A source marked secondary is not the state’s own record.
Codes by jurisdictionMissouri Department of Natural Resourcesdnr.mo.gov (opens in a new tab)Agency pageRetrieved About how the state adopts codes
RSMo 67.280 Communities may incorporate by reference certain technical codesMissouri Revisor of Statutesrevisor.mo.gov (opens in a new tab)StatuteRetrieved
Tracker cross-checks
Code adoption trackers are a cross-check. They are not Missouri’s own record.
About a tracker cross-check
Missouri adoptions map pageCross-checkInternational Code Counciliccsafe.org (opens in a new tab)Tracker, secondaryRetrieved
ICC’s code adoption mapCross-checkAgrees with the record
State page says most relevant building codes are adopted locally; chart row shows X marks
AWCCross-checkDoes not agree with the record
Lists 2015 IRC as adopted, applicability LIMITED