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Jurisdiction directory

Michigan home project permits by county

Many Michigan households live outside city limits, where the county building department — not a city — issues the permit. 10 Michigan counties, covering the state's largest jurisdictions, are inventoried here.

Model reviewed August 2026

Counties covered

10

largest jurisdictions first

Municipalities tracked

16

in Michigan

Population covered

6.4M

residents in listed counties

Code basis

Statewide

Michigan Residential Code, based on the IRC

Featured counties

The largest and most active permit jurisdictions in the state.

Wayne County1,774,000 residents · seat DetroitOakland County1,274,000 residents · seat PontiacMacomb County873,000 residents · seat Mount ClemensKent County662,000 residents · seat Grand RapidsGenesee County405,000 residents · seat FlintWashtenaw County372,000 residents · seat Ann ArborIngham County285,000 residents · seat MasonOttawa County300,000 residents · seat Grand HavenKalamazoo County262,000 residents · seat KalamazooSaginaw County190,000 residents · seat Saginaw

All Michigan counties we cover

10 counties, largest first.

Wayne CountySeat: Detroit · 1,774,000 residentsOakland CountySeat: Pontiac · 1,274,000 residentsMacomb CountySeat: Mount Clemens · 873,000 residentsKent CountySeat: Grand Rapids · 662,000 residentsGenesee CountySeat: Flint · 405,000 residentsWashtenaw CountySeat: Ann Arbor · 372,000 residentsOttawa CountySeat: Grand Haven · 300,000 residentsIngham CountySeat: Mason · 285,000 residentsKalamazoo CountySeat: Kalamazoo · 262,000 residentsSaginaw CountySeat: Saginaw · 190,000 residents

Sources

Sources & verification

Model vintage August 2026. The links above are the issuing agencies' own pages — we publish them so you can confirm the current rule yourself, not as evidence that each fact on this page was re-checked with them today. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing, not quotes. Permit rules change; confirm with the building department before starting work.