Off-grid site report
Durham County, NC
35.9495, -78.9264 · 299 ft elevationRead this before you act on anything below. This is my researched starting point for Durham 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 rulesDurham County, NC
Zoning & raw-land occupancy
Varies locallyDurham has countywide zoning through the joint City-County Unified Development Ordinance (UDO), administered by the Durham City-County Planning Department. Rules on raw-land use, subdivision, and setbacks vary by tier (Rural, Suburban, Urban) and are currently being rewritten. source
Dwellings, tiny homes & RVs
Varies locallyFoundation-built tiny/small homes are permitted if they meet NC Residential Code habitable space minimums (smallest built to date is about 480 sq ft, per planning staff); ADUs are allowed by-right on single/two-family lots. RVs or tiny houses on wheels as permanent residences outside RV parks are not confirmed as permitted by any official Durham source. source
Building permits & codes
Generally allowedDurham City-County Building Inspections enforces the NC Residential Building Code locally, and accessory structures require a permit plus a site plan under the UDO. source
Septic & composting toilets
Generally allowedDurham County Environmental Health's Onsite Water Protection section handles septic site evaluations, permits, and inspections under state (NC DHHS) rules. Composting toilets aren't separately addressed on the county site, so confirm treatment with Environmental Health. source
Greywater reuse
Unclear - verifyNo Durham County-specific greywater ordinance was found; this appears to default to state DEQ/DHHS regulation. Confirm with Durham County Environmental Health if you plan a greywater system.
Rainwater harvesting
Unclear - verifyNo Durham County-specific rainwater harvesting rule was found; the state's generally permissive framework appears to apply without a confirmed local deviation.
Private wells & water rights
Generally allowedDurham County Environmental Health issues well construction and repair permits directly, following statewide well construction standards under state authorization. source
Living disconnected from utilities
Unclear - verifyNo Durham ordinance bans off-grid living outright, but occupancy in practice requires an approved septic system and code-compliant construction, which functions as a practical barrier to full disconnection.
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
- 1,392 kWh
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Weather1991-2020
- Precipitation
- 48 in/yr
- Snowfall
- 2 in/yr
- Heating degree days
- 3,898 (moderate)
How far help isstraight-line
- Hospital
- none within range
- Fire station
Durham Fire Station Number 12 - 2.9 mi
- Hardware store
Ace Hardware - 2.5 mi
- Grocery
The Fresh Market - 2.0 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 27707).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Durham 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.