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

At a glance

Building permit

Required statewide under Wisconsin's Uniform Dwelling Code; enforced by your town, village or city, not Brown County itself⁴¹

General zoning

No countywide zoning ordinance; your town or village sets general zoning, setbacks and land use¹

Septic permit

Brown County Planning and Land Services Zoning Division issues sanitary (POWTS) permits; plan approval typically takes about five business days³⁵

Septic permit fee

$600 for a conventional or mound system, $400 for an existing-system inspection; after-the-fact permits cost double⁶

Owner-builder

An owner who occupies or will occupy the home may pull the permit without a certified Dwelling Contractor⁷

Land division review

The county reviews land divisions in towns and villages creating lots of 10 acres or less outside sewer service areas, 40 acres or less inside them⁸

Septic soils

Only about 5% of Brown County's soils are not severely limited for a conventional drain field⁹

Shoreland setback

At least 75 feet from the ordinary high water mark, with limited exceptions¹⁰

Who to call

Contact details are copied from each office’s official page and were checked against it on September 25, 2026.

Do you need a building permit in Brown County, Wisconsin?

Yes, but Brown County itself is not who issues it. Wisconsin's Uniform Dwelling Code requires a building permit for any new one- or two-family home statewide, adopted as the statewide building code for dwellings built since 1980, and it is enforced by whichever municipal or county building inspection department has jurisdiction, or by the state if a municipality opts for state enforcement¹¹¹². In Brown County that enforcing authority is your specific town, village or city rather than the county government: Brown County's own zoning program covers only shoreland, floodplain, sanitary and non-metallic mining, with no general, countywide building or zoning ordinance¹. An owner who currently occupies the home, or will after completion, may take out the construction and erosion-control permits directly instead of using a certified Dwelling Contractor, though plumbing and electrical work generally still needs the applicable licensed trades¹³. You take occupancy after a final inspection finds no major health or safety violations, and the dwelling's exterior must be finished within 2 years of permit issuance¹⁴.

Who is the Brown County building department, and who issues permits?

Brown County does not run a comprehensive zoning ordinance or a county building-inspection department; general land-use zoning and Uniform Dwelling Code enforcement fall to the individual town, village or city where your parcel sits¹. Use the Brown County Land Information Office's GIS parcel map, (920) 448-6295, at 3rd Floor, 305 E Walnut St, Green Bay, to confirm exactly which municipality has jurisdiction over a specific parcel before you call anyone else¹⁵. What Brown County itself runs, through Planning and Land Services' Zoning Division at 920-448-6480, Northern Building, Room 320, 305 E. Walnut Street in Green Bay, is shoreland and floodplain zoning in unincorporated areas, sanitary permitting for septic systems, and non-metallic mining reclamation permits¹⁶. The office is open Monday through Thursday, 7:30 a.m. to 5:00 p.m., and Friday, 7:30 a.m. to 11:30 a.m.¹⁶.

Does Brown County have zoning?

Only for specific programs, not in general. Brown County administers shoreland and floodplain zoning countywide in unincorporated areas, and by contract in the Village of Bellevue, but the county is not comprehensively zoned². Everyday land-use zoning, such as minimum lot size, setbacks away from a shoreline, or where you can put a second dwelling, is set by your own town or village ordinance, not by Brown County; do not assume a rural-sounding address means unrestricted use until you have checked with that specific town¹. If you plan to split off or buy a divided parcel, Brown County's planning commission reviews land divisions in the county's towns and villages that create lots of 10 acres or less outside sewer service areas, and 40 acres or less inside them, under the county's land-division ordinance⁸. Wisconsin law lets a county's zoning apply only in the towns that have adopted it, and a town that hasn't may be unzoned or run its own separate town zoning ordinance, which is one more reason to confirm rules with the specific town rather than assume a countywide answer¹⁷. Within the shoreland zone, state rules require at least a 75-foot setback from the ordinary high water mark, with narrow exceptions such as piers, walkways and some decks, and a structure taller than 35 feet is generally prohibited within that band¹⁰¹⁸.

How do septic permits work in Brown County?

Septic systems in Brown County go through the county's own Zoning Division, which issues sanitary permits controlling all private onsite wastewater treatment systems (POWTS) countywide, with substantive standards coming from Wisconsin Administrative Code and county procedure set out in county ordinance¹⁹. A sanitary permit application must be submitted to the county for every new POWTS, and for a mound, at-grade, in-ground pressure or holding-tank system, state plan approval is required before the county can issue that permit; Brown County holds county-agent status to do that plan approval itself rather than sending it to the state²⁰. County review of a plan approval and sanitary permit application typically takes about 5 business days⁵. A conventional or mound sanitary permit runs $600, an existing-system inspection is $400, and any after-the-fact permit costs twice the normal fee⁶. Soils are a real constraint here: only about 5% of Brown County's soils rate as not severely limited for a conventional septic drain field, so budget for a site evaluation and expect an engineered or mound system to be the norm rather than the exception on much of the county's land⁹. Call the Zoning Division at 920-448-6480 before you make an offer on any parcel that will need a new septic system¹⁶.

Can you live in an RV, tiny home or manufactured home on your land in Brown County?

Wisconsin's state park camping rules limit how many recreational vehicles can occupy a licensed campsite, but that only governs organized camping in the state park system, not whether you can park and live in an RV on your own Brown County land; that answer depends on your specific town's zoning ordinance, since Brown County has none of its own outside shoreland and floodplain areas²¹¹. A manufactured home produced on or after 2007 can be installed and occupied under the Uniform Dwelling Code once it passes final inspection with no major health or safety violations, and the exterior must be finished within 2 years of permit issuance, but local zoning and land-use rules for your town still decide whether that home can sit on your particular lot²². Off-grid sanitation is limited rather than open-ended: any plumbing fixture not connected to a public sewer still needs suitable treatment, recycling, dispersal or holding of wastewater under state plumbing code, which in practice means a permitted POWTS system for most homes rather than an unregulated composting toilet or holding tank²³. Long-term RV occupancy, tiny-home occupancy and manufactured-home land-use rules on private Brown County land were not established by any official county page reviewed for this guide; confirm directly with your town before you buy¹.

Building a home in Brown County: the steps, in order

1. Use the Brown County Land Information Office's GIS map, (920) 448-6295, to confirm which town, village or city governs your parcel, since that municipality runs general zoning and the Uniform Dwelling Code building permit¹⁵.
2. Contact that town or village directly to confirm zoning, setbacks and building-permit requirements for your lot.
3. If you are not on public sewer, have your soil tested and get your septic permitted through Brown County's Zoning Division at 920-448-6480; state plan approval is required first for a mound, at-grade, in-ground pressure or holding-tank system, a process the county itself can complete in about 5 business days, and a building permit for a septic-served home cannot be issued until the sanitary permit is in hand¹⁶⁵¹².
4. If your parcel is in the shoreland or floodplain zone, get that permit from Brown County's Zoning Division as well, since those two programs are countywide¹⁶.
5. If you are dividing land, check whether your split falls under the county's land-division review (lots of 10 acres or less outside sewer service areas, 40 acres or less inside them) before you plat⁸.
6. If you need a new well, get a Well Construction Notification Number from the DNR before drilling in most cases²⁴.
7. Submit at least two sets of plans with your building-permit application to the enforcing municipality, and call for inspections at each phase before covering up the work²⁵²⁶.

What should you check before you buy land in Brown County?

The single biggest thing to confirm before you buy is which town or village governs the parcel, since that determines your zoning and building-permit rules, not Brown County¹. Soil conditions deserve early attention too: only about 5% of the county's soils rate as not severely limited for a conventional septic drain field, and a new sanitary permit runs $600 for a conventional or mound system before you add site-evaluation and installation costs⁹⁶. The land itself is generally easy to build on, with about 96.4% of the county at 15% slope or less, though only about 28.1% of the county is wooded, so don't expect heavy tree cover on a typical parcel²⁷²⁸. Brown County sits close to Green Bay, about 6 miles from the nearest city of 100,000 or more people, with a countywide population density around 512 people per square mile, so land here is rarely as remote as the word "county" might suggest²⁹³⁰. Property taxes run higher than the insurance line: the median property tax bill is about $3,593 a year at an effective rate near 1.5%, while typical home insurance is about $1,111 a year³¹³²³³. If any part of the parcel sits near a river or lake shoreline, confirm the 75-foot shoreland setback and any floodplain designation with Brown County's Zoning Division before you plan where a home will sit, and if you're buying a parcel that was recently split off a larger tract, ask whether it went through the county's land-division review for lots of 10 acres or less outside sewer service areas¹⁰⁸¹⁶.

Watch-outs

• Brown County's own site lists no general zoning ordinance or building-inspection department; the census note and the county's zoning FAQ both confirm individual towns and municipalities handle general zoning here, but this guide could not independently confirm that every town publishes its own building department, so verify directly with your specific town¹.
• A driveway or access connection onto a state highway needs a WisDOT connection permit, separate from anything the county or your town requires; there is no cost to apply, though construction costs may apply³⁴.
• Brown County's posted sanitary and shoreland fee schedule states an effective date of January 1, 2018; fees can change through the annual county budget, so confirm current amounts with the Zoning Division before budgeting a project⁶.

Sources

1. Brown County Zoning FAQ (2026 county census)
2. Brown County Zoning FAQ, quoted and re-checked
3. Private Onsite Wastewater Treatment Systems (2026 county census)
4. Wisconsin DSPS - Uniform Dwelling Code (One- & Two-Family) (2026 county census)
5. Brown County Zoning FAQ, quoted and re-checked
6. Brown County Zoning Fees, quoted and re-checked
7. Wisconsin DSPS - Building a Home in Wisconsin (UDC Guide) (2026 county census)
8. Brown County Land Use, quoted and re-checked
9. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
10. Wisconsin’s Shoreland Management Program (Wisconsin statewide rule), quoted and re-checked
11. One- & Two-Family Uniform Dwelling Code, quoted and re-checked
12. Wisconsin’s Uniform Dwelling Code (Wisconsin statewide rule), quoted and re-checked
13. Wisconsin’s Uniform Dwelling Code (Wisconsin statewide rule), quoted and re-checked
14. Information on Wisconsin’s Uniform Dwelling Code, quoted and re-checked
15. Brown County Land Information Office (browncountywi.gov)
16. Brown County Planning and Land Services - Zoning Division (browncountywi.gov)
17. Local Land Use Regulations and Comprehensive Planning Status Inventory Project (Wisconsin statewide rule), quoted and re-checked
18. Minimum Shoreland Wetland Zoning Model Ordinance (Wisconsin statewide rule), quoted and re-checked
19. Private Onsite Wastewater Treatment Systems, quoted and re-checked
20. Private Onsite Wastewater Treatment Systems, quoted and re-checked
21. Camping Rules — Wisconsin State Park System (Wisconsin statewide rule), quoted and re-checked
22. Wisconsin’s Uniform Dwelling Code (Wisconsin statewide rule), quoted and re-checked
23. Wisconsin Administrative Code, SPS 382 (Wisconsin statewide rule), quoted and re-checked
24. Well and heat exchange notification (Wisconsin statewide rule), quoted and re-checked
25. Wisconsin Administrative Code SPS 320.09 (Wisconsin statewide rule), quoted and re-checked
26. Wisconsin’s Uniform Dwelling Code (Wisconsin statewide rule), quoted and re-checked
27. Share of land at 15% slope or less: Bolthole Index county data
28. Wooded share of land: Bolthole Index county data
29. Distance to the nearest metro area: Bolthole Index county data
30. Population density: Bolthole Index county data
31. Median property tax bill: Bolthole Index county data
32. Effective property tax rate: Bolthole Index county data
33. Typical home insurance premium: Bolthole Index county data
34. State highway connection permits (driveways & more) (Wisconsin statewide rule), quoted and re-checked

Written September 25, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.