Badger SaunaMadison, Wisconsin
City of Madison

Sauna permits in Madison, WI

Madison has the most detailed rules in the county, and the most important one is easy to miss. The shed exemption everyone talks about depends on the building being unheated. A sauna never qualifies, however small it is. Plan on a building permit, an electrical permit if it's electric, and possibly an HVAC permit if it's wood-fired.

Permit requiredWood-fired OK

Do you need a permit for a sauna in Madison?

Yes, a building permit.

Yes. Madison only waives the permit for sheds that are 150 sq ft or smaller, unheated, and at least 10 ft from the house. A sauna is heated by definition, so it needs a building permit, plus an electrical permit for any 240V circuit.

Researched October 5, 2026 from official code

What Madison requires

Building permitRequired

Required. The shed exemption only covers buildings ≤150 sq ft that are unheated and ≥10 ft from the house.

ZoningRequired

Accessory building rules apply (MGO 28.131).

Electrical permitRequired

Required for the 240V circuit (MGO 19.09). Pulled by a licensed electrician.

Wood stove / HVACLikely / ask

Possibly required for a wood stove (MGO 30.01). Ask at the counter.

From lot lines
3 ft minimum
From the house
Per building code
Fee
~$50–$100 (building $0.06/sq ft, min $25; zoning min $25; electrical $25)
Limits
Accessory-building size, height and lot-coverage limits apply by zoning district.
REAR LOT LINE SIDE LOT LINE House Sauna 3 ft 3 ft per code a lit path you'll use in January
Fig. — Madison siting minimumsNot to scale
Where it can go

Siting a sauna in Madison.

Keep the sauna at least 3 ft from the side and rear lot lines. Then think beyond the minimums.

  • 01
    Path before viewA short, lit, shovelable path from the back door matters more than the perfect sightline.
  • 02
    Firm and levelA compacted gravel pad or patio. Barrel saunas sit on cradles, so no frost footing is needed.
  • 03
    Smoke and neighborsWith wood, orient the chimney away from neighbors' windows and keep clear of overhanging branches.
  • 04
    Delivery accessAbout an 8-ft-wide path from the street for a whole-sauna delivery.
Wood-fired in Madison

Generally workable

Madison's outdoor wood boiler ban (MGO 7.55) is aimed at outdoor water-heating furnaces, and it likely doesn't apply to a stove that heats the sauna it sits in. An HVAC permit may be needed for the stove itself. Also remember the city's burn rules: burn only clean, dry wood, and don't make smoke a nuisance for neighbors.

Good to know in Madison
  • The shed exemption has three conditions, and a sauna fails the "unheated" one automatically.
  • Electrical work must be permitted and pulled by a licensed electrician, even for a short run from the house.
  • Madison's Development Services Center can answer zoning questions before you apply. Ask about your specific zoning district.
Step by step

How a sauna gets permitted in Madison.

The usual order of things. With a Badger Sauna, we do steps two through four for you.

  1. 01

    Call Building Inspection

    Confirm your parcel's zoning, the setbacks, and the stove rules. 608-266-4551 · binspection@cityofmadison.com

  2. 02

    Draw a site plan

    A simple plan of the lot showing the sauna, the house, and the distances to each lot line.

  3. 03

    Apply

    Submit the building permit, zoning, electrical permit with spec sheets for the sauna and heater.

  4. 04

    Install & inspect

    A licensed electrician wires the heater on its permit. The inspector signs off, and then the first fire.

Questions

Madison sauna FAQ.

Codes change. Treat this as a well-researched head start, and confirm with the office before you build.

Building Inspection

608-266-4551
binspection@cityofmadison.com

Do I need a permit for a backyard sauna in Madison?

Yes. Madison only waives the permit for sheds that are 150 sq ft or smaller, unheated, and at least 10 ft from the house. A sauna is heated by definition, so it needs a building permit, plus an electrical permit for any 240V circuit.

How close to the property line can a sauna be in Madison?

Plan on at least 3 ft from side and rear lot lines. Accessory-building size, height and lot-coverage limits apply by zoning district. Confirm with Building Inspection at 608-266-4551 before you set the sauna.

Can I have a wood-fired sauna in Madison?

Generally workable. Madison's outdoor wood boiler ban (MGO 7.55) is aimed at outdoor water-heating furnaces, and it likely doesn't apply to a stove that heats the sauna it sits in. An HVAC permit may be needed for the stove itself. Also remember the city's burn rules: burn only clean, dry wood, and don't make smoke a nuisance for neighbors.

Does an electric sauna need an electrical permit in Madison?

Yes. A sauna heater runs on a dedicated 240V circuit, and Madison requires an electrical permit for that work, pulled by a licensed electrician. This is true in every municipality in Dane County.

Official sources for Madison

Researched October 5, 2026 from Madison's published code and permit materials, assuming a freestanding barrel sauna of 40–70 sq ft, sitting on cradles with no foundation, heated by a wood stove or by an electric heater on a dedicated 240V circuit. This is a guide, not legal advice. Your building inspector has the final word. Spot something out of date? Tell us and we'll fix it.

Nearby towns
MiddletonPermit required MononaPermit required FitchburgDepends on size McFarlandPermit required All Dane County towns