Off-grid site report

Warren County, IA

41.3737, -93.5577 · 919 ft elevation

Read this before you act on anything below. This is my researched starting point for Warren 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 rulesWarren County, IA

Zoning & raw-land occupancy

Varies locallyWarren County Planning & Zoning Department administers zoning for unincorporated areas, handling buildability, floodplain, and address matters; incorporated towns like Indianola, Norwalk, and Carlisle set their own separate rules. source

Dwellings, tiny homes & RVs

RestrictedCounty zoning ordinance requires permanent dwellings be affixed to the ground and permitted; RVs, buses, trailers, and containers are excluded as dwellings unless modified to meet code. Manufactured/modular homes are treated like site-built once state-certified; tiny houses aren't defined, so confirm with Zoning. source

Building permits & codes

RestrictedBuilding permits are processed through Warren County Planning & Zoning, which routes applicants through the Engineer, Assessor, and E911 offices before Environmental Health for septic. source

Septic & composting toilets

Generally allowedWarren County Environmental Health issues septic permits under county Chapter 31, which incorporates Iowa Administrative Code 567, Chapter 69; soil testing must be done by a Professional Engineer and sizing is based on bedroom count. Composting toilets aren't separately addressed, so ask Environmental Health directly. source

Greywater reuse

Unclear - verifyNo Warren County ordinance specifically addresses greywater apart from standard septic rules; it likely falls under Chapter 31 wastewater regulation, but this isn't confirmed. Ask Warren County Environmental Health directly.

Rainwater harvesting

Unclear - verifyNo county ordinance, zoning provision, or Environmental Health page addressing rainwater catchment was found; status is not confirmed. Ask Warren County Environmental Health or Planning & Zoning to be sure.

Private wells & water rights

Generally allowedWarren County Environmental Health issues private well and geothermal well permits locally under county Chapter 33, working within Iowa DNR's statewide well-construction permit program for wells serving fewer than 25 people. source

Living disconnected from utilities

Varies locallyNo county ordinance bans disconnecting from utilities outright, but any occupied dwelling still must meet Zoning, septic, and well permitting requirements, meaning fully unpermitted off-grid living would not comply. source

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average: 4.8 hrs/day
Worst month (sizes an off-grid array): 3.2 hrs/day
Yearly output per 1 kW of panels: 1,398 kWh

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Weather1991-2020

Precipitation: 36 in/yr
Snowfall: 28 in/yr
Heating degree days: 6,527 (cold)
Frost-free season: Apr 24 to Oct 6

How far help isstraight-line

Hospital Iowa Methodist Medical Center: 15.5 mi
Fire station Indianola Fire Department: 0.9 mi
Hardware store True Value: 0.8 mi
Grocery Walmart Supercenter: 0.1 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 50125).

Size a solar system Heat loss & insulation Firewood per winter Rainwater harvest Garden size Panel tilt

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.