Permit Required? Required
Typical Fee Range $65–$400 Based on standard residential mechanical permit fees.
Fee Method Flat fee
Apply Online Apply at Department of Neighborhood Services →

What's Required in Milwaukee

  • Mechanical permit required for system changes or replacements.
  • HVAC work can be combined on one form with other categories.
  • Electrical permit mandatory for power connections ($50 base).
  • Exterior units must meet zoning setbacks.
  • Venting and safety valves must be installed per code.
  • Manual J load calculations required for new sizing.

How to Get a HVAC Permit in Milwaukee

1

Step 1: Choose System

Ensure the HVAC unit is correctly sized for the property.

2

Step 2: Online Filing

File for mechanical and electrical permits in the DNS portal.

3

Step 3: Pay Fees

Pay base mechanical and electrical fees.

4

Step 4: Installation

Replace the unit according to mechanical safety codes.

5

Step 5: Final Inspection

Verify drainage, venting, and electrical safety.

Frequently Asked Questions

Yes, HVAC, construction, electrical, and plumbing can be on one form.
Triple fees are assessed if work starts without a permit.
It is $50 for the electrical portion of the project.