Off-grid site report
Humboldt County, IA
42.7209, -94.2155 · 1,073 ft elevationRead this before you act on anything below. This is my researched starting point for Humboldt County, IA, 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 rulesHumboldt County, IA
Zoning & raw-land occupancy
Varies locallyHumboldt County has adopted Ordinance No. 26, a countywide zoning ordinance for unincorporated areas, administered by the county Zoning Administrator. Inside incorporated towns like the City of Humboldt, the town's own zoning code applies instead. source
Dwellings, tiny homes & RVs
Unclear - verifyNo county-specific rule on tiny homes or long-term RV occupancy as a dwelling was found; state rules cover factory-built/manufactured homes generally. Not confirmed for Humboldt County zoning districts, call the county Zoning office. source
Building permits & codes
Generally allowedA building permit is required from the Humboldt County Zoning Administrator for construction projects in unincorporated areas; inside city limits, the city (e.g., City of Humboldt) issues its own permits. source
Septic & composting toilets
Generally allowedSeptic systems, including alternative types, are permitted through the county Environmental Health Specialist (sanitarian), who administers design and permitting locally under Iowa DNR's statewide minimum standards. source
Greywater reuse
Unclear - verifyNo Humboldt County or Iowa DNR page specifically addressing residential greywater reuse was found. Not confirmed, ask the county Environmental Health office directly.
Rainwater harvesting
Unclear - verifyNo Humboldt County or state DNR page addressing residential rainwater catchment was found. Not confirmed, ask the county Zoning or Environmental Health office.
Private wells & water rights
Generally allowedPrivate well permits and testing are handled by the Humboldt County sanitarian's office, which has delegated authority from the state, with siting standards set by Iowa DNR rules. source
Living disconnected from utilities
Varies locallyNo county or state prohibition on disconnected/off-grid living was found, but occupied dwellings must still meet the county's building, septic, and well permitting requirements regardless of utility hookups. source
Sun30-year normals
- Peak-sun hours, annual average
- 4.7 hrs/day
- Worst month (sizes an off-grid array)
- 3.2 hrs/day
- Yearly output per 1 kW of panels
- 1,386 kWh
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Weather1991-2020
- Precipitation
- 33 in/yr
- Heating degree days
- 7,140 (cold)
- Frost-free season
- Apr 25 to Oct 6
How far help isstraight-line
- Hospital
Humboldt County Memorial Hospital - 1.2 mi
- Fire station
Humboldt Fire Department - 0.1 mi
- Hardware store
North Central Iowa Supply - 1.5 mi
- Grocery
Fareway - 0.2 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 50548).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Humboldt County, IA?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.