Off-grid site report
Clayton County, IA
42.9039, -91.1474 · 659 ft elevationRead this before you act on anything below. This is my researched starting point for Clayton 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 rulesClayton County, IA
Zoning & raw-land occupancy
Varies locallyClayton County has an active countywide comprehensive zoning ordinance administered by the county, unlike Iowa counties with no zoning; the ordinance is currently being rewritten, so district-specific rules should be confirmed before purchase. source
Dwellings, tiny homes & RVs
Unclear - verifyNo county page specifically addresses tiny homes or RV-as-residence rules; the zoning ordinance covers structures and 'substantial improvement' thresholds but not dwelling type specifics. Confirm with the Zoning Administrator.
Building permits & codes
Generally allowedBuilding permits are required for all construction in the county except for structures directly related to farming operations, per the county's Environmental Health & Zoning office. source
Septic & composting toilets
Generally allowedSeptic systems are permitted with a required permit through the county's Environmental Health & Zoning office, and Clayton County requires state-certified (CIOWTS) installers under Iowa DNR's onsite wastewater rules. source
Greywater reuse
Unclear - verifyNo Clayton County or Iowa DNR page specifically addressing residential greywater reuse was found; not confirmed. Contact the county Environmental Health office before installing a system.
Rainwater harvesting
Unclear - verifyNo Clayton County ordinance or Iowa DNR rule specifically addressing residential rainwater catchment was found in official sources; not confirmed either way.
Private wells & water rights
Generally allowedPrivate wells require a permit issued by Clayton County's Environmental Health & Zoning office, with records tracked in Iowa DNR's statewide private well database. source
Living disconnected from utilities
Varies locallyNo county ordinance banning off-grid utility disconnection was found, but building, septic, and well permits are still required regardless of grid connection status. source
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
- 1,357 kWh
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Weather1991-2020
- Precipitation
- 34 in/yr
- Snowfall
- 34 in/yr
- Heating degree days
- 6,717 (cold)
- Frost-free season
- Apr 18 to Oct 15
How far help isstraight-line
- Hospital
Crossing Rivers Medical Center - 8.4 mi
- Fire station
McGregor Fire Department Hook and Ladder Company 1 - 8.3 mi
- Hardware store
Keumpel Hardware - 8.8 mi
- Grocery
Walmart Supercenter - 8.1 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 52049).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Clayton 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.