Michigan · Building code

The building code in force in Michigan now.

2021 Michigan Building Code (2021 IBC incl. appendices F, G, H, with Michigan amendments, R 408.30401 et seq.) and 2021 Michigan Rehabilitation Code for existing buildings, both effective Apr 9, 2025. Enforced by Local enforcing agencies (cities, villages, townships, or counties that assume responsibility by ordinance); LARA Bureau of Construction Codes enforces where no local unit does (MCL 125.1508b). Checked on the primary source; the state record was last reviewed 2026-11-12.

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Building code in Michigan

Checked on the source

In force

2021 Michigan Building Code (2021 IBC incl. appendices F, G, H, with Michigan amendments, R 408.30401 et seq.) and 2021 Michigan Rehabilitation Code for existing buildings, both effective Apr 9, 2025

Single state construction code under 1972 PA 230 applies statewide. Companion codes: 2021 Mechanical and Plumbing codes and 2023 NEC effective Mar 12, 2024; 2021 Commercial Energy Code effective Apr 22, 2025. BCC lists the 2015 Residential Code as current (2021 update stayed by a Jul 7, 2025 court order).

Source: primary document

Who enforces it

Local enforcing agencies (cities, villages, townships, or counties that assume responsibility by ordinance); LARA Bureau of Construction Codes enforces where no local unit does (MCL 125.1508b)

Statewide layer. County and city amendments sit on top; confirm the local office for the address.

What changes next

Rulemaking pending

BCC code-books page re-read Oct 27, 2026: 2021 Michigan Building and Rehabilitation Codes effective Apr 9, 2025. Currently-open page: 2025-48 LR (Part 4 Building, Rehabilitation, Part 10a Commercial Energy) still shows only the May 21, 2026 advisory meeting; Plumbing and Mechanical hearings held Aug 5, 2026 (2024 IPC/IMC proposed), no filing date posted; rules take effect 120 days after filing

What a building has to do

1 recurring duties

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.

Monthly

Accessible pool entry: a pool lift or sloped entry in place and working whenever the pool is open (pools with 300 or more linear feet of wall need two accessible entries; a spa needs one: lift, transfer wall or transfer system); the rule sets no inspection interval; a monthly check that it works and is charged is common practice2010 ADA Standards §242 and §1009; 28 CFR 36.211 · U.S. Department of Justice (enforced through complaints and lawsuits) · Checked against the source 2026-09-28.

Questions about the building code in Michigan

Which building code applies in Michigan today?

2021 Michigan Building Code (2021 IBC incl. appendices F, G, H, with Michigan amendments, R 408.30401 et seq.) and 2021 Michigan Rehabilitation Code for existing buildings, both effective Apr 9, 2025. Single state construction code under 1972 PA 230 applies statewide. Companion codes: 2021 Mechanical and Plumbing codes and 2023 NEC effective Mar 12, 2024; 2021 Commercial Energy Code effective Apr 22, 2025. BCC lists the 2015 Residential Code as current (2021 update stayed by a Jul 7, 2025 court order).

Who enforces the building code in Michigan?

Local enforcing agencies (cities, villages, townships, or counties that assume responsibility by ordinance); LARA Bureau of Construction Codes enforces where no local unit does (MCL 125.1508b).

What changes next for the building code in Michigan?

Rulemaking pending. BCC code-books page re-read Oct 27, 2026: 2021 Michigan Building and Rehabilitation Codes effective Apr 9, 2025. Currently-open page: 2025-48 LR (Part 4 Building, Rehabilitation, Part 10a Commercial Energy) still shows only the May 21, 2026 advisory meeting; Plumbing and Mechanical hearings held Aug 5, 2026 (2024 IPC/IMC proposed), no filing date posted; rules take effect 120 days after filing