ADU Permit Requirements in Somerset, WI
St. Croix County village. Building Inspector is Tony Feuerhelm of TF Inspection Agency (tfiagency726@gmail.com, 715-386-5410). Historically this role was filled by Brian Wert Inspection Agency (Hudson, WI), and brianwert.com still lists the Village of Somerset; the current Village website lists TF Inspection Agency as the active inspector. ZIP 54025 also covers the adjacent Town of Somerset, which uses a different inspector (All Croix Inspections, allcroix.com). Confirm jurisdiction (Village vs. Town) by parcel address before issuing permits.
By Joey, Founder · Last verified May 15, 2026 · How we research →
When you need a ADU permit in Somerset
Accessory Dwelling Units (ADUs / guest houses / in-law units) require a building permit and zoning review in virtually every jurisdiction. Septic capacity must be re-evaluated when not on city sewer, and most cities require utility connection upgrades, parking review, and owner-occupancy or rental-restriction findings (IRC R105.1, varies by state ADU statute). To confirm requirements for your specific project in Somerset, WI, contact Village of Somerset Building Inspector / Zoning at (715) 247-3395. Visit: https://www.villageofsomerset.us/village-staff/.
ADU Permit Costs: Somerset vs. Nearby
| City | Estimated Fee |
|---|---|
| Somerset | N/A |
| Milwaukee | $500 – $5,000 |
| Madison | $500 – $5,000 |
| Green Bay | $500 – $5,000 |
Fees shown are estimates based on local building code data. Actual fees may vary based on project scope and valuation. See all Somerset permit costs →
Zoning Considerations
ADU regulations vary dramatically by state and city. Many states (CA, OR, WA) have preemption laws that override local zoning restrictions. Check both state law and local zoning before designing.
Estimated Project Timeline in Somerset
Here's a typical timeline for a adu project in Somerset, WI:
Need an ADU permit in Somerset, WI?
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Frequently Asked Questions
Contact Somerset's building department for current ADU permit fee information. Fees typically vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller ADU 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 Somerset 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.
Contact Somerset's building department for current processing times. Timelines vary based on project complexity and whether plan review is required.
Learn More About ADU Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read ADU Guide →