Garage / Carport Permit Requirements in Madison, WI
WI Uniform Dwelling Code (UDC) based on 2015 IRC for 1-2 family.
When you DON'T need a permit
Small detached garages (120 sq ft or less) may be treated as exempt accessory structures in Madison, WI.
Source: City of Madison Code / WI UDC / 2015 IRC
When you DO need a permit
Detached garages over 120 sq ft require a building permit in Madison, WI.
Estimated fee: $300 – $1,300
Typical timeline: About 2 weeks
Source: City of Madison Code / WI UDC / 2015 IRC
Attached garages require a building permit in Madison, WI. Fire separation from dwelling is required.
Estimated fee: $350 – $1,500
Typical timeline: About 3 weeks
Source: City of Madison Code / WI UDC / 2015 IRC
Carports require a building permit in Madison, WI.
Estimated fee: $210 – $900
Typical timeline: About 2 weeks
Source: City of Madison Code / WI UDC / 2015 IRC
Converting a garage to living space requires multiple permits in Madison, WI.
Estimated fee: $265 – $1,125
Typical timeline: About 3 weeks
Source: City of Madison Code / WI UDC / 2015 IRC
Detached garages and carports may require zoning approval for setback and lot coverage compliance. Garage conversions to living space may trigger zoning occupancy requirements.
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Frequently Asked Questions
Estimated permit fees for Garage / Carport projects in Madison, WI range from $300 – $1,300. Fees vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller Garage / Carport projects may be exempt from permit requirements, while larger ones typically require a permit. Use our free lookup tool to check your specific situation.
Working without a required permit in Madison can result in fines, stop-work orders, being required to remove completed work, and complications when selling your home. It's always best to check first.
Typical approval time for Garage / Carport permits in Madison is About 2 weeks. More complex projects may take longer if plan review is required.
Learn More About Garage / Carport Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read Garage / Carport Guide →