2018 ICC code family (IBC, IPC, IMC, IFGC, IPMC, IRC, IEBC, ISPSC), 2015 IECC (residential), ASHRAE 90.1-2013 (commercial), 2020 NEC, 87 CSR 4. Enforced by Local building jurisdictions enforce statewide; officials certified per Title 87 Series 7. Checked on the primary source; the state record was last reviewed 2026-11-12.
87 CSR 4 (effective Aug 1, 2022) adopts the 2018 IBC, IPC, IMC, IFGC, IPMC, IRC, IEBC and ISPSC, the 2015 IECC for residential, ASHRAE 90.1-2013 for commercial, and the 2020 NEC, with state amendments; agricultural buildings exempt. Sunset date is Aug 1, 2027.
Source: primary document
Statewide layer. County and city amendments sit on top; confirm the local office for the address.
Proposed 87 CSR 4 update: Fire Commission minutes show a Jun 29, 2026 vote to file the proposed rule for public comment and a Jul 30, 2026 vote to file a Notice of Agency Approval for Legislative Rule-Making Review Committee review (comments favored 2024 ICC codes and a sunset extension). No 2026 effective date found; current rule terminates Aug 1, 2027. Confirm with the State Fire Marshal
These apply when the building has the equipment or fits the type named. The frequency is the standard one; your local official can set a stricter one, so confirm it for the address.
2018 ICC code family (IBC, IPC, IMC, IFGC, IPMC, IRC, IEBC, ISPSC), 2015 IECC (residential), ASHRAE 90.1-2013 (commercial), 2020 NEC, 87 CSR 4. 87 CSR 4 (effective Aug 1, 2022) adopts the 2018 IBC, IPC, IMC, IFGC, IPMC, IRC, IEBC and ISPSC, the 2015 IECC for residential, ASHRAE 90.1-2013 for commercial, and the 2020 NEC, with state amendments; agricultural buildings exempt. Sunset date is Aug 1, 2027.
Local building jurisdictions enforce statewide; officials certified per Title 87 Series 7.
Rule sunset Aug 1, 2027. Proposed 87 CSR 4 update: Fire Commission minutes show a Jun 29, 2026 vote to file the proposed rule for public comment and a Jul 30, 2026 vote to file a Notice of Agency Approval for Legislative Rule-Making Review Committee review (comments favored 2024 ICC codes and a sunset extension). No 2026 effective date found; current rule terminates Aug 1, 2027. Confirm with the State Fire Marshal
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