Off-grid site report
Milwaukee County, WI
43.0299, -87.9201 · 587 ft elevationRead this before you act on anything below. This is my researched starting point for Milwaukee County, WI, not legal advice and not a guarantee. Rules change, and the deciding facts on any specific parcel (setbacks, perc results, overlay districts, deed restrictions, road frontage) live at the county or town office, not in any database. Before you buy land or build, confirm the current rules directly with the local zoning and health offices - the sources on this page tell you exactly who to call.
The local rulesMilwaukee County, WI
Zoning & raw-land occupancy
Varies locallyMilwaukee County has no county zoning authority for private land; each of the 19 cities/villages enacts and enforces its own zoning code. Check the specific municipality where the parcel is located. source
Dwellings, tiny homes & RVs
Varies locallyThe State of Wisconsin's Uniform Dwelling Code (DSPS) sets baseline standards for one- and two-family homes, but each municipality enforces its own occupancy and RV/tiny-home rules on top. No countywide tiny-home or RV-living ordinance was found. source
Building permits & codes
Generally allowedBuilding is permitted under the State of Wisconsin building code, but permits are issued by the municipality, not Milwaukee County. The City of Milwaukee issues permits through its Development Center; other municipalities run their own inspection departments. source
Septic & composting toilets
RestrictedMost of Milwaukee County is connected to the Milwaukee Metropolitan Sewerage District, so private septic (POWTS) is largely inapplicable. Where it exists, Wisconsin's POWTS code (administered by DSPS) applies, but the specific local permitting office is not confirmed, so ask your municipality's building or health department. source
Greywater reuse
RestrictedNo Milwaukee County or municipal rule was found changing the state's plumbing code baseline, which allows only limited greywater reuse under permit with a licensed installer. Not confirmed at the county level.
Rainwater harvesting
Varies locallyNon-potable outdoor rainwater harvesting is not restricted and is actually encouraged under the City of Milwaukee's green-infrastructure provisions; indoor/potable use still falls under the state plumbing code.
Private wells & water rights
Generally allowedPrivate wells are uncommon since most of the county uses municipal water, but where they exist they follow the statewide DNR Well and Pump Code (NR 812). No county-specific well-permitting office was confirmed. source
Living disconnected from utilities
Unclear - verifyNo Milwaukee County or municipal rule was found addressing full disconnection from electric, gas, or municipal water/sewer for an occupied dwelling. Given how thoroughly sewered and connected the county is, this would likely be a case-by-case municipal building department issue. Not confirmed.
Sun30-year normals
- Peak-sun hours, annual average
- 4.6 hrs/day
- Worst month (sizes an off-grid array)
- 2.9 hrs/day
- Yearly output per 1 kW of panels
- 1,337 kWh
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Weather1991-2020
- Precipitation
- 37 in/yr
- Snowfall
- 47 in/yr
- Heating degree days
- 6,689 (cold)
- Frost-free season
- Apr 24 to Oct 18
How far help isstraight-line
- Hospital
Aurora Health Center - 5.8 mi
- Fire station
Milwaukee Fire Station 2 - 0.7 mi
- Hardware store
Catholic Knights - 2.2 mi
- Grocery
El Rey Food Mart - 1.4 mi
From OpenStreetMap. Road miles will be longer, often much longer in hill country.
Plan this spot
These open with this location's real numbers already filled in (ZIP 53290).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Milwaukee County, WI?The rules above are the jurisdiction. The land check runs the parcel itself: flood zone, soils and septic suitability, wetlands, slope, access, climate, and these verdicts, from a parcel number or coordinates.
Check a parcel →Share or save this report:New report
Sources: US Census Bureau geocoder; NLR PVWatts v8 (solar); NOAA NCEI 1991-2020 climate normals (nearest station) or Open-Meteo (ZIP-centroid) for weather; Open-Elevation; OpenStreetMap contributors. Public data retrieved Aug 22, 2026; agencies update their layers on their own schedules. Planning data, not a survey or legal advice.
New here, or not sure where this fits? Start here walks through the whole thing in order.