Chester County, Pennsylvania Building Permit Guide

Building permits in Chester County are issued by each municipality, not the county. The county’s permits are for on-lot sewage systems and wells. By the Census Bureau’s Vintage 2025 estimates the most populous municipalities are Tredyffrin Township (31818), West Goshen Township (24224), West Whiteland Township (20826) and Phoenixville Borough (20356).

This guide covers those four municipalities and the county planning, health and conservation offices, plus the DEP and PennDOT offices for the county.

What requires a building permit in Chester County?

Chester County issues no building permits: under Pennsylvania’s Construction Code Act counties are not municipalities. Each municipality administers the statewide Uniform Construction Code itself or through a certified third-party agency, so what needs a permit, what it costs and how it is filed depend on the municipality.

On-lot sewage systems and wells (private, geothermal and monitoring) also need Chester County Health Department permits. Phoenixville Borough has separate roofing, fence and sidewalk/driveway permits.

Pennsylvania enforces one statewide Uniform Construction Code under Act 45 of 1999, based since January 1, 2026 on the 2021 ICC codes and administered by most municipalities themselves or through certified third-party agencies; counties issue no building permits. Building codes in Pennsylvania

Who handles permitting in Chester County?

Each municipality issues its own building permits. At county level:

• Land development: under Act 247 the Chester County Planning Commission must review all subdivision and land development proposals before municipal action, and must endorse approved plans before they are recorded (601 Westtown Road, Suite 270, West Chester, PA 19380-0990; 610-344-6285).
• Sewage and wells: Chester County Health Department, 601 Westtown Road, Suite 295, West Chester; 610-344-6225.

Local rules in the largest Chester County municipalities

Tredyffrin Township

All permit applications and materials must be submitted online through the Township’s Clariti portal; payment is invoiced after plan review. Permits must be posted and visible from the street.

West Goshen Township

Code Enforcement allows up to 15 days for a residential permit decision and 30 days for commercial.

West Whiteland Township

Construction permit applications are accepted online only; paper applications are no longer accepted. Residential permits may take up to 15 business days to review, commercial up to 30 business days.

Phoenixville Borough

Submit applications and design documents digitally to codes@phoenixville.org; two hard copies of drawings larger than 8.5"x11" are requested only after digital review is complete.

Chester County permit costs and fees

Each municipality sets its own fees. West Goshen Township’s fee schedule effective January 5, 2026 sets residential building permits at 1.5% of the actual construction cost with a minimum fee, plus a $4.50 state surcharge per permit; zoning permits are $100. Tredyffrin invoices payment after plan review. New Conservation District urban erosion and sedimentation fees took effect 02/01/2026.

Fees are set by the municipality or its third-party agency, plus the flat $4.50 state Uniform Construction Code fee on each permit. Permit fees in Pennsylvania

Trade permits in Chester County

In West Goshen Township electrical work is reviewed and inspected by an approved third-party agency. Phoenixville Borough issues its own contractor license. West Whiteland Township does not register contractors, but each must provide a certificate of insurance naming the Township.

Trade work follows the Uniform Construction Code; electrical, plumbing and HVAC licences are issued locally where they exist, not by the state. Trade permits in Pennsylvania

How to get a building permit in Chester County

A Pennsylvania permit lapses if work does not start within 180 days or stops for 180 days, and lasts no more than 5 years; residential applications must be decided within 15 business days. Permit validity in Pennsylvania

Inspections in Chester County

Tredyffrin inspections are scheduled by calling 610-644-1400 and pressing #4, or by e-mailing permits@tredyffrin.gov. West Goshen needs 24 hours’ notice. West Whiteland takes requests at least 24 hours ahead by email to permits@westwhiteland.org, with the address, inspection type and permit number.

Erosion control and state offices for Chester County

The Chester County Conservation District handles erosion and sediment control and NPDES construction permits under a delegation agreement with PA DEP, with an Urban Resource Conservationist assigned to each municipality. Office: 674 Unionville Road, Suite 105, Kennett Square, PA 19348; 610-455-1360. PA DEP’s Southeast Regional Office (2 E Main St, Norristown, PA 19401; 484-250-5900; office hours 8am–4pm) serves the county, and PennDOT District 6 (7000 Geerdes Boulevard, King of Prussia, PA 19406; 610-205-6700; 8:00 a.m. – 4:30 p.m. Monday - Friday) is responsible for its state-maintained roads.

Official Chester County permitting resources

These are the primary sources behind this guide. Codes, fee schedules and procedures change — confirm the position for your filing date.

• Chester County Planning Commission plan review
• Chester County Health Department sewage and water
• Chester County Conservation District
• Tredyffrin building and construction permits
• West Goshen Code Enforcement
• West Whiteland permit applications
• Phoenixville permits and applications
• PA DEP Southeast Regional Office
• PennDOT District 6

Frequently asked questions

Does Chester County issue building permits?

No. Municipalities issue building permits; the county Health Department permits on-lot sewage systems and wells.

Can I file a paper application in West Whiteland Township?

No. Construction permit applications are accepted online only.

When is the Chester County Conservation District office open?

Tues, Wed, Thurs 10a-2p or by appointment.

Simplify Chester County permitting with Alliance Permitting

• Confirm which municipality, and which code official or third-party agency, handles the parcel
• Prepare the municipal application plus any county, conservation district or PennDOT filing the project needs
• Schedule the required inspections and close out the permit

Alliance Permitting is a permit documentation and submission company in Pennsylvania. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

This guide is provided by Alliance Permitting for general information about Chester County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.