Building permits, zoning and septic rules in Uwchlan Township, Pennsylvania

At a glance

Building permit

Required before covered residential construction¹²

Zoning

Township zoning ordinance applies³

Septic permits

Chester County Health Department; new systems, repairs and modifications, with limited repair exceptions⁴⁵

Private wells

County Health Department permits covered well construction⁶⁴

Owner-builder

No general statewide contractor license for most work; township requirements still need confirmation⁷

Occupancy

UCC residential certificate of occupancy required before use⁸

Who to call

Contact details are copied from each office’s official page and were checked against it on October 15, 2026.

Do you need a building permit in Uwchlan Township, PA?

Uwchlan Township has adopted the Pennsylvania Uniform Construction Code, and covered residential construction requires a building permit before work starts.¹² Pennsylvania’s residential rule covers construction, enlargement, alteration, repair, moving, demolition and changes of occupancy, subject to its scope exclusions and limited-work exemptions.² Ordinary repairs can be exempt, but structural changes and specified changes to building systems are outside that ordinary-repair category.² Ask the township Building & Zoning Department to classify your proposed work before relying on an exemption.⁹

Who handles building and zoning questions in Uwchlan Township?

Start with Uwchlan Township’s Building & Zoning Department at 610-363-9450; the office is at 715 North Ship Road in Exton.⁹ The department’s website links to plot plan requests and residential use and occupancy requests.⁹ Keep the township building conversation separate from the wastewater conversation: Chester County Health Department issues on-lot sewage and well construction permits, including inside Uwchlan Township.⁴ For land outside the township, use the Chester County guide to orient your questions about county services.⁴

Does Uwchlan Township have zoning, and what about RVs or tiny homes?

Uwchlan Township has a zoning ordinance and regulates subdivision and land development.³¹⁰ We could not confirm Uwchlan Township’s parcel-level minimum lot area, setbacks, lot coverage or minimum dwelling size; ask the township Building & Zoning Department for the zoning district and the applicable dimensional schedule.⁹ We also could not confirm permission to occupy an RV, a tiny home or an accessory dwelling on a private lot, including while a house is being built; take the proposed use to the same department before buying for that purpose.⁹

How do septic and well permits work inside Uwchlan Township?

Chester County Health Department issues permits for individual and small-community on-lot sewage systems and well construction inside Uwchlan Township.⁴ New sewage systems, repairs and modifications require a septic permit, with a limited exception for repairs completed without digging equipment.⁵ New major septic permits require soil testing, so resolve the sewage layout before committing to a house location.¹¹ Do not cover a septic system before final inspection and written approval from the county Sewage Enforcement Officer.¹² For new construction, the county’s well-permit rule generally requires public sewerage or a valid sewage permit, subject to its stated exceptions.¹³

Can an owner-builder build an off-grid home in Uwchlan Township?

Pennsylvania has no statewide licensure or certification requirement for most construction contractors, but municipalities may impose local requirements; ask Uwchlan Township Building & Zoning about requirements for your owner-built project.⁷ Owner-performed work does not remove the residential building-permit requirement for covered construction.² A composting or incinerating toilet also does not resolve all sanitation requirements for a new home: Pennsylvania requires an on-lot sewage system or another approved disposal method for washwater or excess liquid, with the toilet and disposal facilities under the same permit except for the retaining-tank exception.¹⁴

Building a home in Uwchlan Township: what comes first?

1. Ask Uwchlan Township Building & Zoning to identify the applicable zoning requirements and discuss the proposed house and site layout.⁹³
2. If the lot needs on-lot sewage or a private well, take those plans to Chester County Health Department and arrange the required septic testing and permits.⁴¹¹
3. Obtain the residential building permit before covered work begins, and keep permitted construction accessible for inspections.²¹⁵
4. Complete final inspections and obtain the residential certificate of occupancy before using the home.¹⁵⁸

Watch-outs

• Uwchlan Township has local zoning; a statement about the absence of county-administered zoning does not describe the township’s land-use rules.³
• We could not confirm Uwchlan Township’s RV occupancy, tiny-home occupancy or public sewer connection requirements; ask Township Building & Zoning before committing to a parcel or temporary living arrangement.⁹
• Building or changing a driveway on state highway land requires a PennDOT highway occupancy permit, including where the driveway connects to a PennDOT drainage facility.¹⁶

Sources

1. Chapter 106 Construction Codes, Uniform – Township of Uwchlan, PA (Uwchlan Township), quoted and re-checked
2. Part XIV, Uniform Construction Code, Chapter 403 Administration (Pennsylvania statewide rule), quoted and re-checked
3. Township of Uwchlan, PA – eCode360 table of contents (Uwchlan Township), quoted and re-checked
4. Sewage & Water, quoted and re-checked
5. Permits for On-Lot Sewage Disposal Systems, quoted and re-checked
6. Sewage & Water, quoted and re-checked
7. Contractor Licensing (Pennsylvania statewide rule), quoted and re-checked
8. Part XIV, Uniform Construction Code, Chapter 403 Administration (Pennsylvania statewide rule), quoted and re-checked
9. Uwchlan Township Building & Zoning Department (uwchlan.com)
10. Township of Uwchlan, PA – eCode360 table of contents (Uwchlan Township), quoted and re-checked
11. Permits for On-Lot Sewage Disposal Systems, quoted and re-checked
12. Application & Permit Procedure for On-Lot Sewage Disposal Systems, quoted and re-checked
13. Chester County Health Department Rules and Regulations, quoted and re-checked
14. 25 Pa. Code § 73.65. Recycling toilet, incinerating toilet or composting toilet (Pennsylvania statewide rule), quoted and re-checked
15. Part XIV, Uniform Construction Code, Chapter 403 Administration (Pennsylvania statewide rule), quoted and re-checked
16. Apply for a PennDOT Highway Occupancy Permit (Pennsylvania statewide rule), quoted and re-checked

Written October 15, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.