Building permits, zoning and land rules in Chester County, Pennsylvania

Yes. Construction or building work in Chester County subject to Pennsylvania's Uniform Construction Code requires a UCC building permit before work begins¹. Covered residential construction and changes, along with specified electrical, gas, mechanical, plumbing, pool and hot-tub work, require building inspections¹. A UCC certificate of occupancy must be issued before a covered building is used¹. Pennsylvania generally does not license most construction contractors, and an owner may perform uncompensated work on the owner's own residence, but municipal contractor requirements may still apply⁹. A qualifying agricultural building without habitable space can be excluded from the Construction Code Act, but municipal zoning, fire, electrical, health and environmental rules may still apply¹⁰.

Chester County has no single county building-permit counter: an opt-in municipality administers the UCC, while residential work in an opt-out municipality uses a certified third-party agency and non-residential work goes to Pennsylvania Labor and Industry¹. Ask the parcel's township or borough who accepts its building-permit application, schedules inspections and sets building-permit fees. The Chester County Planning Commission handles county planning review rather than municipal building permits or zoning administration^11,12. County subdivision and land-development review fees are separate: residential plans with 1–2 lots or dwelling units have a $200 base fee¹². Where Labor and Industry has jurisdiction, incomplete plan submissions can be returned if requested information is not received within 10 calendar days; expedited review and after-hours inspections cost extra¹³. Septic and well permits remain with the Chester County Health Department⁴.

Every Chester County municipality has adopted its own zoning ordinance and map; township land outside borough or city limits is still subject to municipal zoning³. Kennett Square and New London Township set their own zoning rules^14,15. Septic-system and well permitting remain with the Chester County Health Department^4,5. Chester County's aggregate GIS zoning layer is an information resource, not a uniform county zoning ordinance or district schedule^3,6. Obtain the current ordinance and map from the parcel's municipality and ask its zoning office about allowed uses, setbacks, minimum lot size and lot coverage; standards and approval categories vary by municipality and district².

The Chester County Health Department issues septic permits for individual and small-community on-lot sewage systems⁴. New systems, repairs and modifications require a county septic permit, except repairs completed without digging equipment, such as exposed tank lids or exposed lateral end extensions⁷. The sewage application process includes forms, fees, soil and percolation testing, plan documents, final inspection and an as-built diagram¹⁶. Only 24% of county soils are rated without severe limitations for a conventional drain field, so confirm sewage suitability before treating a lot as buildable⁸. Give at least 3 full working days' notice for final inspection, leave the system uncovered until written approval, and cover it within 5 calendar days after approval to cover is signed¹⁷. A composting, incinerating or recycling toilet still needs an approved way to handle washwater or excess liquid for a new residence¹⁸.

We could not confirm one Chester County rule allowing RV residence or temporary camping on private land. Each parcel is governed by its municipality's zoning ordinance and district, and zoning districts vary across the county's communities^2,3. Ask the township or borough zoning office whether the district allows an RV as a dwelling, temporary occupancy during construction, a tiny house or a manufactured home, and whether minimum size, setbacks or utility connections apply. County septic permits and well permits remain separate from municipal zoning approval^4,5.

1. Identify the parcel's municipality and zoning district using the county GIS layer, then obtain the current municipal ordinance and map^3,6.
2. Confirm the home and accessory uses with the municipal zoning office and obtain required zoning approval².
3. Apply to the Chester County Health Department for sewage approval; new construction generally needs public sewerage or a valid sewage permit before a licensed contractor applies for the well permit^5,7.
4. Confirm the UCC enforcing office and obtain the building permit before covered work starts¹.
5. Arrange required building and septic inspections and obtain the certificate of occupancy before use^1,17.
6. Obtain municipal floodplain approval before development in a Special Flood Hazard Area and a PennDOT driveway permit for work occupying state-highway land^19,20.

Confirm the parcel's district and current ordinance with the municipality before relying on a land listing's proposed use². Ask the Chester County Health Department about sewage suitability and the well-permit sequence before committing to raw land; new construction generally requires public sewerage or a valid sewage permit before well approval⁵. The well application must come from an appropriately licensed contractor⁵. Subdivision and land-development projects require a DEP Application Mailer sent to both the Health Department and DEP, plus a Subdivision/Land Development Information Form submitted to the Health Department²¹. County planning review has its own referral form and fees, including lot-line revisions and lot consolidations^12,16. Check flood hazards and road ownership because municipal floodplain approval and PennDOT state-highway access approval are separate requirements^19,20.