Off-grid site report

Darlington County, SC

34.3587, -80.0611 · 210 ft elevation

Read this before you act on anything below. This is my researched starting point for Darlington County, SC, 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 rulesDarlington County, SC

Zoning & raw-land occupancy

Varies locallyDarlington County has countywide zoning administered by its Planning Commission under the County Code of Ordinances, but specific district-by-district raw-land rules weren't retrievable in this research; incorporated towns like Hartsville and the City of Darlington run separate codes that override the county inside their limits. source

Dwellings, tiny homes & RVs

RestrictedThe county's Mobile and Manufactured Home ordinance bars establishing any mobile home built before June 15, 1976 in the unincorporated county, though existing ones can stay or relocate under the ordinance. Tiny home and full-time RV occupancy rules were not confirmed for Darlington specifically; ask Codes Enforcement.

Building permits & codes

Generally allowedStandard building permits are required and administered by Darlington County Codes Enforcement, which coordinates with the SC Building Code Council and other state boards. source

Septic & composting toilets

RestrictedSouth Carolina requires site approval and permits for septic systems through SCDES (formerly DHEC), and Darlington County won't issue a building permit without that approval. No composting-toilet-specific county rule was confirmed. source

Greywater reuse

RestrictedNo Darlington-specific greywater ordinance was found; this defers to South Carolina's statewide requirement for an engineered reuse system through SCDES. source

Rainwater harvesting

Unclear - verifyNo Darlington County ordinance addressing rainwater harvesting, cisterns, or registration was found. Contact county Codes Enforcement or Planning before installing a system.

Private wells & water rights

RestrictedPrivate wells are permitted statewide through SCDES, but unincorporated Darlington residents can alternatively connect to the Darlington County Water & Sewer Authority, a rural special-purpose water district.

Living disconnected from utilities

Varies locallyNo county ordinance banning off-grid power or requiring grid connection was confirmed, but any inhabited dwelling still must clear building permit, septic, and well requirements regardless of its power source.

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average: 5.3 hrs/day
Worst month (sizes an off-grid array): 4.2 hrs/day
Yearly output per 1 kW of panels: 1,494 kWh

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Weather1991-2020

Precipitation: 47 in/yr
Snowfall: 1 in/yr
Heating degree days: 2,943 (mild)
Frost-free season: Mar 31 to Nov 7

How far help isstraight-line

Hospital Carolina Pines Regional Medical Center: 2.6 mi
Fire station Alligator Fire Department: Station 1: 13.0 mi
Hardware store Harbor Freight Tools: 0.5 mi
Grocery Walmart Supercenter: 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 29550).

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.