Off-grid site report

Washington County, PA

40.2859, -80.4987 · 988 ft elevation

Read this before you act on anything below. This is my researched starting point for Washington County, PA, 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 rulesWashington County, PA

Zoning & raw-land occupancy

Varies locallyWashington County has no countywide zoning; each township or borough sets its own zoning under the state Municipalities Planning Code (Act 247). The county Planning Commission only handles mandatory subdivision/land-development review, not zoning. source

Dwellings, tiny homes & RVs

Unclear - verifyNot confirmed at the county level; rules for tiny homes, RVs, and foundation dwellings depend on the individual municipality's zoning and UCC administration. Contact the applicable township or borough zoning office.

Building permits & codes

RestrictedPennsylvania's Uniform Construction Code (Act 45 of 1999) is the statewide framework, but each municipality chooses how to enforce it; the City of Washington, for instance, has formally adopted the UCC as its municipal code. Check enforcement method with your specific township/borough. source

Septic & composting toilets

RestrictedOn-lot septic is enforced locally by Sewage Enforcement Officers, coordinated countywide by the Washington County Sewage Council (a local government cooperative, not a government agency itself) under the state's Act 537. A sewage permit is required before a building permit, and sewage planning modules must be arranged with WCSC before land subdivision surveys are approved. source

Greywater reuse

RestrictedNo county-specific greywater rule was found; it would likely fall under the same state Act 537 on-lot sewage framework enforced by local Sewage Enforcement Officers/WCSC. Not confirmed separately, so ask WCSC directly.

Rainwater harvesting

Generally allowedNon-potable rainwater harvesting appears permitted under the general state baseline; no Washington County ordinance modifying this was found.

Private wells & water rights

Generally allowedPennsylvania DEP does not regulate private homeowner wells and there are no statewide siting/construction standards, though drillers must be licensed by the state. Some municipal water authorities in the county may require a local well permit or notification, especially near existing water lines, so confirm with your township. source

Living disconnected from utilities

Varies locallyNo state or countywide law mandates grid or utility connection, but some municipal water/sewer authorities can require hookup when service is available nearby. This varies township by township across Washington County.

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average: 4.4 hrs/day
Worst month (sizes an off-grid array): 2.5 hrs/day
Yearly output per 1 kW of panels: 1,201 kWh

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Weather1991-2020

Precipitation: 42 in/yr
Heating degree days: 5,720 (cold)
Frost-free season: Apr 26 to Oct 19

How far help isstraight-line

Hospital Weirton Medical Center: 7.6 mi
Fire station Fire Station Number Three: 5.9 mi
Hardware store True Value: 7.2 mi
Grocery Walmart Supercenter: 7.7 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 15312).

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 21, 2026; agencies update their layers on their own schedules. Planning data, not a survey or legal advice.