Building permits, zoning and septic rules in Fayette County, Pennsylvania

Yes. Construction and building work covered by Pennsylvania's Uniform Construction Code needs a permit before work begins in Fayette County¹. Fayette County no longer enforces the UCC, so the Building Code Official responsible for the parcel's municipality handles the permit^1,8. The same official or authorized agency conducts required inspections⁴. An owner may perform work on the owner's own primary residence without a statewide contractor license in many cases, but that does not waive UCC permits or inspections, and a municipality may impose contractor requirements^1,4,5. A qualifying agricultural building used only for specified farm purposes and containing no habitable space is excluded from the Construction Code Act, although zoning and other rules may still apply⁶.

Fayette County's Uniform Construction Code Administration page directs applicants to their municipality to identify the responsible Building Code Official⁸. That official or authorized administering agency handles the building permit and required inspections for covered work^1,4. A building, structure or facility subject to the UCC may not be used or occupied without a certificate of occupancy from the Building Code Official⁴. Completed construction also needs written proof of passed inspections before connection to public electric or gas service, although the code official may authorize a temporary construction connection⁴. County zoning and planning submissions have published fees, but municipal building and septic fees may differ². If you do not know the parcel's municipality, start with Fayette County Planning, Zoning & Community Development².

Yes, but which zoning office issues zoning approval depends on the municipality; building permits and septic permits are separate and stay with each municipality's Building Code Official and Sewage Enforcement Officer^1,9. Fayette County Planning and Zoning administers zoning and planning for 31 of the county's 42 municipalities². The other 11 administer their own zoning and planning: Perryopolis, Ohiopyle, Uniontown, Connellsville, Henry Clay Township, Menallen Township, South Union Township, Springhill Township for zoning only, Stewart Township, Washington Township and Wharton Township². County-administered municipalities use published county zoning districts and regulations; independently zoned municipalities may use different maps, districts and controls¹⁰. Ask the controlling zoning office about the parcel's permitted uses, minimum dwelling size, lot size and setbacks because we could not confirm one set of measurements that applies throughout Fayette County.

On-lot sewage systems in Fayette County generally require a permit from the applicable local agency, which may be a municipality or a joint local agency³. Fayette County directs applicants to their municipality to identify its appointed Sewage Enforcement Officer, and the state provides an Active SEOs by County lookup^9,11. Only 0.5% of Fayette County soils rate free of severe limits for a conventional septic drain field, so establish site feasibility early⁷. For subdivisions under the county ordinance, soil-log test pits are required where appropriate and percolation tests may be required to verify suitability¹². A completed system cannot be covered until the permit issuer approves it or 72 hours pass after notice, excluding Sundays and holidays, unless permission was refused¹³. Pennsylvania has a narrow permit exemption for some owner or immediate-family systems on contiguous tracts of at least 10 acres, subject to ownership, notification and siting conditions; confirm eligibility with the local agency¹⁴.

We could not confirm one countywide rule allowing long-term RV occupancy, temporary camping or tiny-home occupancy in Fayette County. The answer must be checked against the zoning rules controlling the parcel: Fayette County administers zoning in 31 municipalities, while 11 municipalities administer their own rules². A tiny home used as a dwelling may also trigger UCC permits, inspections and a certificate of occupancy when the work is covered^1,4. Before buying, give the controlling zoning office the parcel number and ask whether the proposed unit is a permitted principal or accessory residence, whether temporary occupancy during construction is allowed, and which dimensional rules apply. For a county-administered parcel, start with Fayette County Planning, Zoning & Community Development; for a self-zoning municipality, contact that municipality².

1. Identify the parcel's municipality and determine whether Fayette County or the municipality administers zoning².
2. Ask the municipality to identify its Building Code Official and confirm the UCC permit and inspection requirements^1,4,8.
3. Submit complete county zoning or subdivision documents with the published fee when county review applies². County subdivision review applies in municipalities without an independent subdivision and land-development ordinance; municipalities with their own ordinance use that ordinance¹².
4. Identify the local sewage agency and its Sewage Enforcement Officer before designing an on-lot system^3,11.
5. For UCC-regulated floodplain construction, have the required floodplain documentation prepared and sealed by a registered design professional¹. Obtain a highway occupancy permit before creating driveway access to a Commonwealth highway⁴.
6. Complete inspections and obtain the certificate of occupancy before using the finished building⁴.

Fayette County is hilly and heavily wooded: 51.5% of the land has a slope of 15% or less, and 72.3% is forested⁷. Those conditions, combined with only 0.5% of soils rating free of severe limits for a conventional septic drain field, make buildable-area and sewage testing central to due diligence⁷. Confirm the zoning district and permitted use, identify the Building Code Official, and determine which local sewage agency serves the parcel before making an offer^1,3,10. Check whether a subdivision needs county or municipal review, whether UCC floodplain documentation applies, and whether access onto a Commonwealth highway needs a highway occupancy permit^1,4,12. We could not confirm a Fayette County-specific private-well permit or a countywide water-and-sewer connection rule, so ask the municipality and the serving utility about the parcel.