Zoning, building permits and septic rules in Town of New Haven, Wisconsin
Town of New Haven is a town in Adams County, Wisconsin. Town of New Haven adopts its own zoning, so inside its limits Town of New Haven’s rules apply, not the county’s. 8 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the Adams County page.
Answers from the rulebook for Town of New Haven
Town of New Haven’s own rules
Building permitRequired
New homes, additions, decks, and listed structures inside New Haven town.
The county building page is expressly for New Haven among named towns.
An unattached storage building under 150 square feet does not need a permit, but other ordinance requirements apply.
A 150-square-foot-or-larger storage building requires a zoning-permit application.
unattached storage-building threshold: < 150 square feet (No permit needed below this threshold; other ordinance requirements still apply.)
“Building is under 150 sq ft. You will not need permit [...] Building 150 sq ft. or larger”
Local zoningPresent (with conditions)
Land inside New Haven town; zoning is administered through Adams County zoning rather than a separately adopted town zoning ordinance.
The town plan states that New Haven is currently under Adams County zoning.
County zoning decisions are made by the county; the town plan states that the Town Board reviews local petitions and has veto authority over county-approved zoning changes.
“The Town of New Haven is currently under Adams County zoning.”
Zoning districtsPublished (with conditions)
County zoning districts applicable inside New Haven town.
The town is currently under Adams County zoning.
The town's ordinances page links directly to the Adams County Comprehensive Zoning Ordinance; district-specific contents require consultation of that code.
“Adams County Planning and Zoning Legislation”
Minimum lot sizeSpecified
Lots created by land division in New Haven town that are not served by public sewer and for which the County Zoning minimum is less than two acres.
Applies upon the ordinance's effective date.
A strictly nonresidential use such as utilities or other infrastructure may receive an exception where POWTS would never be required.
This does not replace a larger County Zoning minimum.
minimum lot size: >= 2 acres (Applies only where no public sewer is provided and County Zoning otherwise sets a smaller minimum.)
“the minimum lot size shall thereafter be two (2) acres.”
Subdividing landRegulated (with conditions)
Land divisions and subdivisions inside New Haven town.
The ordinance applies to minor land divisions, major land divisions, town subdivisions, condominium plats, condominium-plat amendments, and condominium declarations.
All required approvals must be obtained; the town ordinance does not represent other governmental bodies.
Major land divisions and town subdivisions are prohibited in designated Agricultural, Forestry, and Preservation and Open Space Areas unless the proposal results in one or fewer net total lots.
land-division parcel area threshold: <= 40 acres (Definition applies to divisions creating two or more parcels or building sites within five years.)
“This Ordinance shall apply to all lands within the Town of New Haven.”
Driveway accessRequired
Driveway access to Town roads inside New Haven town.
The Town Board controls the permit process for Town roads.
Driveway changes must conform to the policy standards and Town Board discretion.
County-road driveways are instead subject to Adams County Highway Department permitting; state-road driveways are subject to Wisconsin DOT.
“Any owner of the land adjacent to a Town road right-of-way who wishes to construct a driveway shall apply to the Town Board for a permit”
Permit feesVariable (with conditions)
Land-use and building-related requests inside New Haven town.
Most requests have no town-level fee.
Adams County fees vary by request type.
“Adams County fees vary by type of request”
Permit processPartial
Land-use requests inside New Haven town.
Applicants are directed to begin with Adams County Planning and Zoning.
After the county guidance stage, applicants must request placement on both Plan Commission and Town Board agendas.
The town requires a copy of county paperwork.
The stated usual timeline is about two months and four review meetings; the first three are advisory and the County Board makes the decision.
stated usual processing time: 2 months (Most requests; source states this as an estimate.) · stated review meetings: 4 meetings (Most requests.)
“Most requests will take about two months”
Still unanswered
We looked and could not find an official answer yet. Silence is not permission; ask Town of New Haven or Adams County directly.
Owner-builder exemption — Owner-built residential construction inside New Haven town.
Building code adopted — Residential construction inside New Haven town.
Inspections — Building work inside New Haven town.
Certificate of occupancy — Occupancy of structures inside New Haven town.
Minimum dwelling size — Dwellings inside New Haven town.
16 more unanswered
Setbacks
Lot coverage
Building height
Living in an RV
Camping on your land
Tiny homes
Manufactured homes
Accessory dwellings
Septic permit
Septic inspection
Off-grid sanitation
Well permit
Mandatory utility hookup
Agricultural exemption
Building in a floodplain
Short-term rentals
Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.
Unanswered questions are usually a sign that Town of New Haven publishes no rule on the point, not that none exists. Adams County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Town of New Haven means bringing your own water and power. The kit we’d start with:
