Off-grid site report

Woodbury County, IA

42.5319, -96.3724 · 1,112 ft elevation

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

Zoning & raw-land occupancy

RestrictedWoodbury County has countywide zoning for unincorporated areas under Iowa Code Chapter 335, enforced by the Community & Economic Development department. Raw-land occupancy without a permitted use isn't clearly addressed; conditional uses and variances go through the Zoning Commission and Board of Adjustment. source

Dwellings, tiny homes & RVs

Unclear - verifyNo county-specific rule on tiny houses or long-term RV occupancy was confirmed. The county does regulate accessory dwelling unit dimensions by ordinance; ask the zoning office about tiny homes or RVs as permanent dwellings. source

Building permits & codes

RestrictedRural/unincorporated building permits are handled by Woodbury County Community and Economic Development (Sioux City handles its own within city limits). The specific adopted building code edition wasn't confirmed, so ask the county directly. source

Septic & composting toilets

Generally allowedA permit is required to install a private sewage system, with Siouxland District Health Department enforcing Iowa DNR Chapter 69 minimum standards and requiring pre- and post-construction inspections. Iowa also requires septic inspection at time of property transfer statewide. source

Greywater reuse

Unclear - verifyNo Woodbury County or Siouxland District Health page specifically addresses standalone greywater systems; not confirmed, so check with Siouxland District Health before installing.

Rainwater harvesting

Unclear - verifyNo county ordinance or health department guidance on rainwater catchment was found; not confirmed either way.

Private wells & water rights

Generally allowedSiouxland District Health Department permits private water supply well construction in Woodbury County and offers free annual water testing to residents via a state grants program. source

Living disconnected from utilities

Varies locallyNo county ordinance directly prohibits or permits disconnecting from electric, water, or sewer utilities, but septic, well, and building/zoning permit requirements still apply regardless of utility connection.

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average: 4.9 hrs/day
Worst month (sizes an off-grid array): 3.4 hrs/day
Yearly output per 1 kW of panels: 1,436 kWh

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Weather1991-2020

Precipitation: 28 in/yr
Snowfall: 35 in/yr
Heating degree days: 6,863 (cold)
Frost-free season: Apr 28 to Oct 3

How far help isstraight-line

Hospital UnityPoint Health | St. Luke's: 1.9 mi
Fire station Sioux City Fire Department Station 7: 0.3 mi
Hardware store Wilmes Hardware: 2.5 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 51108).

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.