Washington County's Land Use Division administers sanitation regulations, shoreland, wetland and floodplain zoning, and subdivision plat review for the unincorporated county. It has moved its sanitary and stormwater permitting online, and it enforces a land division rule that can stop a project before it starts.
The division sits within the Planning and Parks Department alongside Land and Water Conservation, Geographic Information Systems and the Planning Division, and publishes an online permit inquiry application that determines whether a project falls inside the regulated shoreland, wetland or floodplain zone and which permits it needs.
This guide covers unincorporated Washington County. West Bend, Hartford, Germantown, Jackson, Kewaskum, Slinger and Richfield permit their own construction — several through their own inspectors, and Richfield and Jackson name municipal inspectors directly.
An unrecorded lot stops everything. Under the county's land division chapter, no sanitary or other county permits shall be issued on any lot not of record until the requirements of that chapter and any other ordinance have been met. Where a subdivider proposes improvements inside the County Shoreland Zone, a shoreland zoning permit must issue before any construction.
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Get a free quote →What requires a building permit in Washington County?
Typically permit required
- Sanitary permits for installing or repairing septic systems — the property owner is required to obtain one
- Shoreland, wetland and floodplain zoning approvals within 300 feet of a river or navigable stream, 1,000 feet of a lake or pond, and all floodplain and wetland areas within
- Erosion control and stormwater management permits, applied for through the county portal
- Subdivision plat and land division review, including the lot-of-record requirement
- Highway access approval where a county highway is involved
- The building permit, issued by the town
Often exempt
- Anything inside a city or village, which permits independently
- Projects outside the regulated shoreland, wetland and floodplain zones with no septic or land-disturbance component
- Buildings used for farming — exempt from the state commercial building code under Wis. Stat. 101.05(5), with farming defined by DSPS rule; a produce stand stays exempt only while at least 90 percent of what it sells was grown or produced on the farm
- Primitive rural hunting cabins — carved out of municipal jurisdiction by Wis. Stat. 101.65(1g)
- Bed-and-breakfast establishments as defined by statute — outside the commercial building code under Wis. Stat. 101.05(2), though a third floor in use or a new addition must meet the Uniform Dwelling Code
What is actually local, and what is not
The building code is statewide. Washington County's layer is sanitation and water: the septic programme, the shoreland-wetland-floodplain zone, erosion and stormwater, and the land division rules that determine whether a lot can be permitted at all. Some approvals additionally require the Land Use and Planning Committee, and possibly the County Board.
Wisconsin's Uniform Dwelling Code covers one- and two-family homes. Its Commercial Building Code covers public buildings, workplaces and buildings of three or more units. Local ordinances must conform to both. Wisconsin rules
Who handles permitting in Washington County?
The Land Use Division administers sanitation, shoreland, wetland and floodplain zoning and subdivision plat review. Town building inspectors issue building permits. The county advises contacting its office well in advance of any construction or renovation, since some permits require committee and potentially County Board approval.
Not sure this scope needs a permit?
Get a free quote →| Detail | Information |
|---|---|
| Department | Washington County Land Use Division (Planning and Parks Department) |
| County issues | Sanitary, shoreland/wetland/floodplain, erosion control and stormwater, plat review |
| Online | Sanitary and erosion control/stormwater permit applications through the county's permit program |
| Permit inquiry tool | Online application determining whether a project lies within the regulated zone |
| Committee approval | Some permits require the Land Use and Planning Committee, possibly the County Board |
| Building permits | Town building inspector |
Permit types
Residential permits
A rural house is permitted by the town under the Uniform Dwelling Code with state Dwelling Contractor credentials. The county's sanitary permit is required for septic installation or repair, and a master plumber is involved in the sanitary permit process. Where the parcel is in the shoreland-wetland-floodplain zone, county approval precedes construction.
How Wisconsin contractor licensing works
Wisconsin certifies dwelling contractors and licenses electricians and plumbers at state level (see Wisconsin rules). Washington County licenses no trades; state credentials govern and the town inspector verifies them.
Commercial permits
Commercial development in the unincorporated county needs the applicable county approvals — sanitary, shoreland, stormwater, plat — before the town's building permit. Building code plan review routes to the state or a delegated municipality; the county holds no commercial plan review delegation.
Rather talk it over?
Call 1-855-478-4290 →Mechanical work, and where the state reviews directly
Commercial plans above set sizes go to the state for review first (see Wisconsin rules). The county advises planning several weeks ahead of the proposed start date to secure permits, since committee scheduling can extend the timeline.
Washington County permit costs and fees
County fees attach to the sanitary, shoreland and stormwater programmes and are separate from the town's building permit fee. The county's warning is about liability rather than cost.
| Item | Fee or rule |
|---|---|
| Sanitary permit | Required for septic installation or repair; applied for online |
| Erosion control and stormwater | Applied for online through the county permit program |
| Shoreland, wetland and floodplain | Per the county schedule; some require committee approval |
| Building permit | Set by the town |
The owner carries the liability. The county warns that when work takes place without permits, county and state laws usually hold the property owner responsible even if a contractor did the work — and in some cases the contractor may be responsible as well.
Trade permits and who may pull them
Trades are state-credentialed and permitted by the town; septic and land-disturbance work runs through the county.
Rather not deal with the Washington County building department?
Get a free quote →Permit required
- Electrical, plumbing and HVAC — state credentials; town permits
- Septic installation or repair — county sanitary permit, with a master plumber involved
- Land disturbance — county erosion control and stormwater permits
- One- and two-family general work — state Dwelling Contractor plus Qualifier
Typically exempt
- Work inside West Bend, Hartford, Germantown or another municipality
- Projects entirely outside the regulated zone with no septic or grading component
How to apply for a Washington County building permit
It determines whether the project lies inside the regulated shoreland, wetland or floodplain zone.
No county permits issue on a lot that is not, until land division requirements are met.
Through the county's permit program.
The county advises planning well ahead; some permits need committee or County Board approval.
Required before any construction where a subdivider proposes improvements in the shoreland zone.
The town issues and inspects under the state code.
Review, corrections and what actually causes delay
Two things extend a Washington County timeline: an unrecorded lot, which blocks county permits outright, and committee-level approvals, which run on meeting schedules rather than staff review time.
Want this handled start to finish?
Get a free quote →Inspections in Washington County
Building inspections are the town inspector's. County activity covers septic system installation and repair, erosion and stormwater compliance and shoreland enforcement.
Washington County permit search and official resources
- Washington County permits and applications — sanitary, shoreland and stormwater permitting online
- Washington County Chapter 257, Land Divisions — the lot-of-record rule as published
- DSPS plan review — state triggers and delegated authority lists
- Wisconsin Uniform Dwelling Code — SPS 320 to 325 as published
Frequently asked questions
Does Washington County issue building permits?
No. The county issues sanitary, shoreland, wetland, floodplain and stormwater permits and reviews plats; the town issues the building permit.
What is the lot-of-record rule?
No sanitary or other county permits will be issued on a lot not of record until the requirements of the land division chapter and any other ordinance have been met.
Inspections are where schedules slip.
Get a free quote →What area does shoreland zoning cover?
Property within 300 feet of a river or navigable stream and within 1,000 feet of a lake or pond, plus all floodplain and the wetland areas within.
Can I apply online?
Yes — sanitary and erosion control and stormwater management permits are applied for through the county's online permit program.
Who is responsible if work is done without permits?
The county warns that county and state laws usually hold the property owner responsible even where a contractor performed the work, and the contractor may also be responsible.
How far ahead should I apply?
Several weeks before the proposed start, since some permits require Land Use and Planning Committee and possibly County Board approval.
Simplify Washington County permitting with Alliance Permitting
Washington County can stop a project on a paperwork technicality before anyone looks at a drawing. We confirm the lot status, run the permit inquiry, file the county tracks online and hand the town a file that can issue.
Ready to break ground in Washington County sooner?
Send us the scope and the parcel. We confirm the review path with the Washington County Land Use Division, assemble the submittal, file it, and track it through issuance — corrections included.
More Wisconsin permitting guides
More Wisconsin permitting guides
This guide is provided by Alliance Permitting for general information about Washington County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.