Building Permits in Detroit, MI
Check permit requirements for home improvement projects in Detroit. Select a project type below to see local requirements, estimated fees, and how to apply.
Recent permit activity in Detroit
We track 33,213 permit records from Detroit's official open-data feed, updated 3 days ago.
Thinking about a project? Check what permits have already been pulled on a property — data is current to 3 days ago. Useful for buyers vetting a listing, or homeowners curious about their neighbors' renovations.
Key Exemptions in Detroit
These projects typically don't require a building permit in Detroit:
Small at-grade patio slabs under 120 square feet are typically exempt from building permits per IRC R105.2 (extended via local amendment). The slab must be at-grade (not more than 30 inches above adjacent grade) and not part of an accessible route.
Freestanding decks not more than 30 inches above grade are exempt from a building permit per Michigan Residential Code (based on 2015 IRC).
Replacing an existing driveway in the same footprint with no changes to the curb cut is generally exempt from permit requirements.
Replacing a light fixture or outlet in an existing location does not require a permit.
Plugging a Level 1 (120V) EV charger into an existing outlet is NOT considered new electrical work and does not require a permit. This is the only permit-free EV charging method, just plug in and charge. Adds approximately 4-5 miles of range per hour.
See all rules by selecting a project type below, or use our free lookup tool for a personalized answer.
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Detroit Building Department
Nearby Cities in Michigan
Permit Guides
Read our in-depth guides for common home improvement projects: