Off-grid site report

Oklahoma County, OK

35.4646, -97.5343 · 1,207 ft elevation

Read this before you act on anything below. This is my researched starting point for Oklahoma County, OK, 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 rulesOklahoma County, OK

Zoning & raw-land occupancy

Varies locallyOklahoma County Zoning Regulations apply only to unincorporated land, dividing it into zoning districts with a default 'AA Agricultural & Rural Residential' classification. Land inside any city (OKC, Edmond, etc.) follows that municipality's own zoning code instead, per state law limiting county zoning authority to unincorporated areas. source

Dwellings, tiny homes & RVs

Unclear - verifyNo Oklahoma County-specific rule on tiny homes or RVs as permanent dwellings was found; this is not confirmed at the county level. Confirm directly with the Oklahoma County Planning Department, since municipalities within the county may have their own separate rules. source

Building permits & codes

RestrictedOklahoma County's Planning Department issues building permits for unincorporated land only, covering additions, outbuildings, and mobile home placement, and requires contractor registration. Incorporated cities within the county issue their own permits through their own building departments. source

Septic & composting toilets

RestrictedThe Oklahoma Department of Environmental Quality (DEQ) issues the Authorization to Construct for new or modified on-site sewage systems statewide, and requires DEQ-certified soil/percolation testing. Oklahoma County's building permit process incorporates this DEQ requirement directly into its application. source

Greywater reuse

Generally allowedNo Oklahoma County ordinance on greywater was found, so this appears to default to the state's general allowance for small-scale residential greywater reuse without a permit.

Rainwater harvesting

Generally allowedNo Oklahoma County-specific rainwater ordinance was found; this defaults to the state baseline allowing non-potable rooftop rainwater collection without a state permit.

Private wells & water rights

Generally allowedNo Oklahoma County-specific well ordinance was found. Domestic wells fall under the Oklahoma Water Resources Board's statewide exemption for domestic use, with DEQ septic setback rules indirectly affecting well siting.

Living disconnected from utilities

Varies locallyOklahoma County's building permit process leads to a Certificate of Occupancy, but county documents don't state a mandatory utility hookup for unincorporated parcels. Incorporated cities within the county may impose their own utility-connection requirements through their adopted codes. source

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average: 5.5 hrs/day
Worst month (sizes an off-grid array): 4.5 hrs/day
Yearly output per 1 kW of panels: 1,563 kWh

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Weather1991-2020

Precipitation: 37 in/yr
Snowfall: 8 in/yr
Heating degree days: 3,365 (moderate)
Frost-free season: Mar 27 to Nov 9

How far help isstraight-line

Hospital OU Medical Center: 2.2 mi
Fire station Oklahoma City Fire Station 1: 0.7 mi
Hardware store Ace Hardware: 2.2 mi
Grocery Westwood Grocery: 1.1 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 73125).

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.