Off-grid site report

Berkeley County, SC

33.0102, -80.0478 · 52 ft elevation

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

Zoning & raw-land occupancy

Varies locallyBerkeley County has adopted a countywide Zoning and Development Standards Ordinance administered by Planning and Zoning, unlike unzoned SC counties. Incorporated towns within the county run separate zoning, so confirm which jurisdiction applies to your parcel. source

Dwellings, tiny homes & RVs

RestrictedRVs are not permitted as permanent residences in the county, only in approved RV parks. Tiny homes on permanent foundations are treated differently than wheeled units, and ADUs get case-by-case zoning review with no confirmed size caps from an official source. source

Building permits & codes

Generally allowedBerkeley County Building Codes Enforcement requires a permit to build, consistent with state-adopted codes; some exemptions exist but weren't detailed publicly, so ask the permit office. source

Septic & composting toilets

RestrictedSCDES (state) authorization for septic is required before the county will approve a new lot's plat, and Berkeley County has separately banned shared/community septic facilities in unincorporated areas. source

Greywater reuse

RestrictedNo Berkeley County-specific greywater ordinance was found; this defers to the state SCDES wastewater framework. Not confirmed whether the county adds anything beyond that. source

Rainwater harvesting

Unclear - verifyNo Berkeley County ordinance or guidance on rainwater harvesting was found. Ask Planning and Zoning or Codes/Permitting directly before installing a system.

Private wells & water rights

RestrictedSCDES authorization for a private well must be provided before the county approves a new lot's plat; wells are otherwise governed by state SCDES regulations, not a distinct county ordinance. source

Living disconnected from utilities

Varies locallyNo county rule bars disconnecting from the grid, but occupying a structure still requires the septic/well authorization and a building permit described elsewhere, so off-grid power/water itself isn't regulated even though the structure and its systems are. source

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average: 5.2 hrs/day
Worst month (sizes an off-grid array): 4.0 hrs/day
Yearly output per 1 kW of panels: 1,433 kWh

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Weather1991-2020

Precipitation: 51 in/yr
Snowfall: 1 in/yr
Heating degree days: 1,977 (mild)
Frost-free season: Mar 8 to Nov 29

How far help isstraight-line

Hospital MUSC Health Medical Center: 16.6 mi
Fire station Goose Creek Rural Fire Department Station 2: 1.6 mi
Hardware store Lowe's: 6.6 mi
Grocery Food Lion: 0.6 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 29445).

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.