Building permits, zoning and land rules in Brown County, Wisconsin

Yes. Brown County projects involving a new one- or two-family dwelling, including a stick-built, modular or manufactured-home installation, require a permit under Wisconsin's Uniform Dwelling Code^1,5. Plans must be approved and the permit issued and posted before construction begins; additions and alterations can have municipality-specific permit rules⁵. The issuing authority is the municipality when it has delegated authority and Wisconsin DSPS otherwise¹. New homes require footing, foundation and reinforcement, rough-work, insulation and final inspections by the delegated municipality or a DSPS-appointed inspector¹. An owner who occupies or will occupy the finished home may obtain the construction and erosion-control permits, but owner-builder status does not waive permits, inspections, or the applicable plumbing and electrical trade rules⁵. Occupancy follows a final inspection with no major health or safety violations; some municipalities issue occupancy permits, and the exterior must be completed within 2 years after permit issuance⁵.

The building-permit and inspection contact depends on the parcel: a municipality with delegated authority handles the UDC application, while Wisconsin DSPS handles it where the municipality lacks that authority¹. Start with the Brown County Land Information Office's GIS parcel map, or call (920) 448-6295 at 3rd Floor, 305 E Walnut St, Green Bay, to identify the parcel's town, village or city⁸. Brown County Planning and Land Services' Zoning Division separately handles sanitary and shoreland permits plus floodplain, wetland and non-metallic-mining matters⁹. Reach that office at 920-448-6480 in the Northern Building, Room 320, 305 E. Walnut Street, Green Bay⁹. Its posted hours are Monday through Thursday, 7:30 a.m. to 5:00 p.m., and Friday, 7:30 a.m. to 11:30 a.m⁹..

Brown County is not comprehensively zoned; each municipality maintains its own general zoning, so ask the parcel's town, city or village for the current district, allowed uses, minimum lot size, ordinary setbacks and dwelling-size rules^2,10. Brown County publishes shoreland, floodplain, farmland-preservation and airport-protection layers, but county-held municipal zoning may not reflect recent municipal changes¹⁰. County shoreland and floodplain zoning applies throughout unincorporated Brown County and is also administered by the county in the Village of Bellevue under contract¹⁰. Within the shoreland zone, the statewide baseline is a 75-foot setback from the ordinary high water mark, subject to stated exceptions and setback averaging⁷. Brown County also reviews land divisions in towns and villages that create lots of 10 acres or less outside sewer service areas or 40 acres or less inside them, and serves as an objecting agency for subdivision plats in cities¹¹.

Brown County administers private onsite wastewater treatment systems through its Zoning Division under state technical authority and county procedure^3,4. Every new POWTS requires a sanitary-permit application to the county, with plan approval before permit issuance for systems that require it^3,4. The process generally includes a soil and site evaluation, system design, any required plan approval, and county permit submission². After construction and before backfilling, the plumber must notify the issuing agency so the POWTS can be inspected⁴. The published fee information lists $600 for a conventional or mound permit, $400 for an existing-system inspection, and twice the normal fee for an after-the-fact permit¹². The newer fee record also lists a $16 annual sanitary-maintenance fee¹². Only about 5% of county soils lack severe limits for a conventional drain field, so resolve siting and design early⁶.

We could not confirm a countywide rule for living in an RV or tiny home on private land in Brown County; ask the parcel's town, city or village because general zoning varies by municipality². Do not use Wisconsin State Park camping limits as the answer for private property, because those rules apply to state-park campsites¹³. A manufactured-home installation is covered by the Uniform Dwelling Code, but local zoning still determines whether that use is allowed on a particular parcel^1,5. Off-grid sanitation is not an unrestricted workaround: Brown County generally prohibits holding tanks for new residential construction unless no approved onsite treatment-and-disposal system is possible, with limited additional exceptions⁴. If an existing POWTS is failing and public sanitary sewer is available, connection may be ordered within a period no longer than 1 year after the first violation notice; where sewer is unavailable, a replacement POWTS is required⁴.

1. Use the Brown County Land Information Office's GIS map or call (920) 448-6295 to identify the parcel's town, village or city⁸.
2. Ask that municipality about general zoning, allowed use, setbacks and whether it or Wisconsin DSPS handles the UDC permit^1,2.
3. If the home will use a private well, obtain the permit from the county or municipality with authority⁵.
4. If the parcel lacks public sewer, complete the site evaluation and design, then submit the sanitary-permit application to Brown County^2,3.
5. Ask Brown County's Zoning Division whether shoreland or floodplain approval applies⁹.
6. Submit the building application, required approvals and at least 2 plan sets; begin only after plan approval and after the permit is issued and posted^5,14.
7. Contact the inspector named on the permit for each required inspection before work is covered¹.

First identify the governing town, city or village, then confirm the parcel's current zoning directly with that municipality because county-held municipal zoning may not reflect recent changes¹⁰. Ask the same municipality whether it or Wisconsin DSPS handles the building permit¹. Resolve septic feasibility early: only about 5% of Brown County soils lack severe limits for a conventional drain field, and the county requires a sanitary permit for every new POWTS^3,6. Check the county's shoreland and floodplain overlays before choosing a building site¹⁰. Confirm legal access too: a connection to a state highway needs a WisDOT permit, while we could not confirm the rule for access onto a Brown County highway¹⁵. The median property-tax bill is about $3,593 a year at an effective rate near 1.5%, and typical home insurance is about $1,111 a year⁶. Finally, ask whether a recent land split received county review and whether public sewer availability could affect an existing septic system^4,11.