Permit Required? Required
Typical Fee Range $1,000–$2,500 Includes building, electrical, and occupancy fees.
Fee Method Valuation-based
Apply Online Apply at Department of Neighborhood Services →

What's Required in Milwaukee

  • Building permit required for residential accessory dwellings.
  • Wisconsin Uniform Building Permit Seal fee of $80 applies.
  • Residential occupancy permit is $65 per unit.
  • Erosion control fee of $205 per lot required.
  • Must include full kitchen and bathroom facilities.
  • Electrical permit mandatory ($50 base price).

How to Get a ADU Permit in Milwaukee

1

Step 1: Zoning Audit

Ensure the lot allows for a secondary dwelling unit.

2

Step 2: Professional Plans

Submit drawings for the required DNS review process.

3

Step 3: Online Filing

Apply for 'Construction' and 'Trade' permits via the portal.

4

Step 4: Pay Fees

Submit occupancy, erosion control, and building seal fees.

5

Step 5: Occupancy Permit

Final $65 occupancy check required before habitation.

Frequently Asked Questions

It is $80 each for the Uniform Building Permit Seal.
Yes, a $205 fee applies per 1 & 2 family lot.
Yes, residential occupancy is $65 per unit.