Off-grid site report
Navajo County, AZ
34.4315, -110.5958 · 6,427 ft elevationRead this before you act on anything below. This is my researched starting point for Navajo County, AZ, 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 rulesNavajo County, AZ
Zoning & raw-land occupancy
Varies locallyNavajo County Planning & Development Services administers countywide zoning for unincorporated land, with zone changes requiring public hearings before the Planning and Zoning Commission and Board of Supervisors. Incorporated towns set their own separate zoning. source
Dwellings, tiny homes & RVs
RestrictedThe county will not permit a shed, RV, or accessory structure on vacant land before a primary dwelling's building permit is opened; guest houses and manufactured homes are separately regulated under county and state rules. source
Building permits & codes
RestrictedNavajo County has adopted its own construction codes (based on the IRC/IBC with local amendments) for unincorporated areas, and requires proof of an approved septic system before issuing a construction permit. source
Septic & composting toilets
Generally allowedSeptic design, permitting, and inspection for unincorporated Navajo County go through Planning & Development Services, not the Environmental Health department; some alternative systems fall to ADEQ instead. source
Greywater reuse
Unclear - verifyNo Navajo County-specific greywater ordinance was found; the state's ADEQ tiered general permit likely applies as the baseline, but this is not confirmed at the county level, so ask Planning & Development Services directly.
Rainwater harvesting
Unclear - verifyNo county ordinance on residential rainwater harvesting was found, meaning Arizona's general no-permit-required baseline likely applies, but this isn't confirmed specifically for Navajo County.
Private wells & water rights
Generally allowedPrivate wells are regulated by the Arizona Department of Water Resources statewide; most of Navajo County lies outside Active Management Areas, so a domestic exempt well typically just needs ADWR registration via a Notice of Intent. source
Living disconnected from utilities
RestrictedNavajo County will not connect power to vacant land; utilities (including off-grid solar) are tied to having an approved, permitted dwelling in place first, per the county's own FAQ. source
Sun30-year normals
- Peak-sun hours, annual average
- 6.3 hrs/day
- Worst month (sizes an off-grid array)
- 5.2 hrs/day
- Yearly output per 1 kW of panels
- 1,782 kWh
JFMAMJJASOND
Weather1991-2020
- Precipitation
- 19 in/yr
- Heating degree days
- 5,696 (cold)
How far help isstraight-line
- Hospital
Summit Healthcare Regional Medical Center - 36.5 mi
- Fire station
Heber-Overgaard Fire District - 2.4 mi
- Hardware store
AZ Building Supply - 1.8 mi
- Grocery
Heber Market - 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 85928).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Navajo County, AZ?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.