Inside the City of Milwaukee, the first call for a basement project usually goes to the permit desk. The city's quick checklist doesn't give basements a flat yes or no, so this page sets out what it does say and which line to dial.
What the city's permit checklist and fee schedule say
The Department of Neighborhood Services checklist marks basement alterations or conversions as "Probably" needing a permit, with questions going to 414-286-8210 [1]. On the same list, every kind of electrical work needs a permit and a licensed contractor; the electrical line is 414-286-2532 [1]. Plumbing in a single-family, owner-occupied home is a firm yes (414-286-8208), insulation is marked "Sometimes" and stairs "Probably" [1]. The city's Plan Review and Permit Fee Schedules list alterations, remodeling, and repairs at 1.6% of the cost of construction, with a minimum fee of $150, and plan exam at $0.25 per square foot of the total affected area, with a minimum fee of $125 [2]. A 1.6% training and technology surcharge applies to each permit fee, plus a $20 processing fee. Where construction is started, or when a premises is occupied, without first obtaining a permit, the fees specified in this section may be quadrupled. The one- and two-family section of that schedule has no printed effective date, so confirm the current fee with the city [2].
Do I need a permit to finish a basement in Milwaukee?
Probably. The checklist puts basement alterations and conversions in the "Probably" column, so call Plan Exam & Permits at 414-286-8210 with your plans before any work starts [1].
Where is the permit office?
Plan Exam & Permits is at 809 N. Broadway, 1st Floor. The checklist page also points to the state's Uniform Dwelling Code for one- and two-family homes [1].
Next steps
More reading: full basement finishing, adding a bathroom or permits around Milwaukee. State code basics are on how it works, and nearby you'll find Wauwatosa and Brookfield. All towns: service areas.
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Sources
- City of Milwaukee DNS, Does It Need a Permit? (fetched Nov 11, 2026) https://city.milwaukee.gov/DNS/permits/PermitChecklist
- City of Milwaukee DNS, Plan Review and Permit Fee Schedules (no effective date printed on the one- and two-family section; fetched Nov 11, 2026) https://city.milwaukee.gov/ImageLibrary/Groups/dnsAuthors/permits/Documents/DevCenterFeeCombo.pdf