Off-grid site report
Chatham County, NC
35.8436, -79.0402 · 325 ft elevationRead this before you act on anything below. This is my researched starting point for Chatham County, NC, 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 rulesChatham County, NC
Zoning & raw-land occupancy
Varies locallyChatham County has its own countywide Zoning Ordinance run by the Planning Department, but bona fide farms are exempt. The county is also transitioning to a new Unified Development Ordinance, so rules may shift; confirm current status with Planning. source
Dwellings, tiny homes & RVs
Unclear - verifyNo official Chatham County page spells out tiny-home minimum size or RV occupancy rules; third-party claims about Appendix Q are not confirmed. Ask the Planning Department or Building Inspections directly. source
Building permits & codes
Generally allowedChatham County Building Inspections enforces the North Carolina State Building Code on all construction, including off-grid cabins, through standard plan review, permitting, and inspection. source
Septic & composting toilets
Generally allowedAn approved on-site septic system is mandatory where no sewer utility is available, administered by Chatham County Environmental Health through an Improvement Permit, Construction Authorization, and final Operation Permit. Stand-alone composting toilets as a substitute are not addressed on the county's site. source
Greywater reuse
RestrictedNo county-specific greywater program was found; the county appears to defer to the state DEQ/DHHS on-site wastewater framework. Not confirmed whether Chatham offers any local greywater pathway.
Rainwater harvesting
Generally allowedNo county ordinance restricting rainwater harvesting was found, so the statewide rainwater harvesting protections appear to apply without added county requirements.
Private wells & water rights
Generally allowedChatham County Environmental Health requires inspection and water sampling of new private wells before Building Inspections will schedule a final inspection for occupancy. source
Living disconnected from utilities
Unclear - verifyThere's no standalone county rule on solar-only or grid-disconnected living, but the permitting chain effectively requires an approved well and septic system before a Certificate of Occupancy is issued, meaning full self-sufficiency from water/sewer infrastructure isn't legally possible even if you skip the electric grid. source
Sun30-year normals
- Peak-sun hours, annual average
- 5.1 hrs/day
- Worst month (sizes an off-grid array)
- 3.8 hrs/day
- Yearly output per 1 kW of panels
- 1,388 kWh
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Weather1991-2020
- Precipitation
- 47 in/yr
- Snowfall
- 4 in/yr
- Heating degree days
- 3,631 (moderate)
- Frost-free season
- Apr 3 to Nov 1
How far help isstraight-line
- Hospital
- none within range
- Fire station
North Chatham Fire Department Station 18 - 5.8 mi
- Hardware store
Town & Country - 2.7 mi
- Grocery
Harris Teeter - 2.7 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 27515).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Chatham County, NC?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 21, 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.