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

At a glance

Building permit

Required before construction covered by Pennsylvania's Uniform Construction Code begins⁷

Zoning

Rules vary by municipality; check the township, borough or city ordinance for the parcel³

Septic permit

Required, issued by your municipality's Sewage Enforcement Officer under state Act 537⁸

Occupancy

A covered residential building cannot be used or occupied without a certificate of occupancy⁹

10-acre septic exemption

A permit exemption can apply to an owner or family residence on a contiguous tract of 10+ acres, with conditions¹⁰

Driveway access

A driveway to a Commonwealth highway requires a PennDOT highway occupancy permit¹¹

Who to call

Contact details are copied from each office’s official page and were checked against it on October 9, 2026.

Do you need a building permit in Butler County, Pennsylvania?

Yes. Pennsylvania's statewide Uniform Construction Code applies in Butler County, and the owner or authorized representative must obtain a UCC permit before covered construction begins¹². A municipality that enforces the UCC locally handles the permit; for residential work in an opt-out municipality, the owner or contractor uses a certified third-party agency¹². Permitted residential work requires foundation, systems, framing, wallboard and final inspections, with the permit holder responsible for notifying the code official and providing access¹³. A covered residence cannot be used or occupied until the building code official issues a certificate of occupancy after a compliant final inspection¹⁴. The certificate is generally issued within 5 business days after the code official receives a compliant final inspection report⁹. Qualifying agricultural buildings without habitable space are excluded from the Construction Code Act, but a dwelling does not become exempt merely because it stands on a farm¹⁵.

Who issues building permits in Butler County, and how do you reach them?

Start with the township, borough or City of Butler where the parcel lies; Pennsylvania directs local permit and zoning questions to that municipality¹⁶. The county Planning Commission maintains a directory linking to the municipalities¹⁷. As one example only, Butler Township can be reached at 290 S. Duffy Road, Butler, PA 16001, phone 724-283-3430, during its posted weekday hours¹⁸. For subdivision and land-development review where the county ordinance applies, contact Butler County Economic Development & Planning at 124 West Diamond Street, Butler, PA 16003-1208 or 724-285-4731¹⁹. Butler County publishes its subdivision process and fee schedule, while local or third-party agencies administer the UCC building-permit process according to jurisdiction²⁰²¹.

Does Butler County have zoning?

Zoning varies by municipality in Butler County. Zoning decisions are left to individual townships and boroughs, and the county's ordinance list shows that some municipalities have their own zoning ordinances³. Pennsylvania limits county zoning to land in municipalities without an effective municipal zoning ordinance, and a later municipal ordinance replaces county zoning within that municipality²². Ask the township, borough or city about the parcel's district, permitted uses, setbacks, lot size and building height because no single countywide schedule answers those questions²³. Subdivision review is separate: some municipalities use their own subdivision ordinance, while the Butler County ordinance applies in municipalities identified for county review⁶.

How do septic permits work in Butler County?

Local or joint local agencies carry out on-lot septic permitting and enforcement in Butler County, with DEP providing technical oversight⁴. The agency serving the parcel issues permits for retaining tanks and individual or community on-lot systems; large-volume systems are an exception to that ordinary local responsibility⁵. State law generally requires the local-agency permit before installing or using an on-lot system¹⁰. An owner or immediate-family residence on a contiguous tract of at least 10 acres can qualify for a permit exemption only when the ownership, local-ordinance and siting conditions are met¹⁰. Composting, incinerating and recycling toilets do not eliminate wastewater planning because liquid discharge still needs a compliant or approved disposal method²⁴. Use the county's municipal directory to identify the correct local agency and Sewage Enforcement Officer¹⁷.

Can you live in an RV or tiny home on your land in Butler County?

This is a municipal question, not a county one, and Butler County's own site doesn't answer it — ask your specific township, borough or city¹⁷. Pennsylvania's recreational-camping and RV rules govern licensed state-park campgrounds, not a homeowner's own RV on private land, so they don't settle this question either²⁵. A manufactured home that arrives with its federal HUD label and is installed exactly to the manufacturer's approved design is largely outside the state Uniform Construction Code, but a later addition, repair outside that design, resale or relocation brings the UCC back into play, on top of whatever your municipality's zoning requires for siting²⁶.

Building a home in Butler County: the steps, in order

1. Identify the parcel's township, borough or city through Butler County's municipality directory¹⁷.
2. Ask that municipality which zoning rules apply and who administers its UCC permits; residential applicants in an opt-out municipality use a certified third-party agency³¹².
3. Identify the local Sewage Enforcement Officer and obtain the required on-lot permit unless the agency confirms a statutory exemption applies²⁷¹⁰.
4. If the project subdivides or develops land, determine whether the municipal or Butler County subdivision ordinance applies and complete that review before building on the plan⁶.
5. Obtain any required municipal driveway permit, or a PennDOT highway occupancy permit for access to a Commonwealth highway²⁸¹¹.
6. Obtain the UCC building permit before covered work begins².
7. Schedule required inspections and obtain the certificate of occupancy before using a covered residence¹³¹⁴.

What to check before you buy land in Butler County

Only about 1.1% of Butler County soils have no severe limitation for a conventional septic drain field, so make the local Sewage Enforcement Officer's site evaluation an early contingency²⁹⁴. About 72.6% of the county is at a 15% slope or less, while 66.6% is wooded, making grading and clearing parcel-specific budget items³⁰³¹. Flood-plain construction requires sealed building-code documentation from a registered design professional, and development in a Special Flood Hazard Area needs municipal floodplain review³²³³. A driveway connecting to a Commonwealth highway requires a PennDOT highway occupancy permit, while a municipal road may require a municipal driveway permit²⁸. Dividing land is a separate approval from building permits: Butler County's subdivision ordinance exempts a division of agricultural-purpose land into parcels of more than 10 acres only when it involves no new street or easement of access and no residential dwelling³⁴. The nearest city of 100,000 or more is about 34 miles from the county center³⁵. The median property-tax bill is about $2,950 a year, with an effective rate near 1.1%³⁶³⁷.

Watch-outs

• Building, zoning and ordinary on-lot septic contacts depend on the parcel's township, borough or city, so identify the municipality before relying on Butler Township or any other local example¹⁷⁴.
• A municipality that opted out of the state Uniform Construction Code requires the property owner to hire a state-certified third-party agency to issue the building permit, instead of a municipal building code official; confirm which situation applies to your municipality³⁸.
• A 10-acre-plus tract may qualify for a septic permit exemption for an owner or immediate-family residence, but only under specific ownership-date, local-ordinance and siting conditions; verify eligibility with your municipality's Sewage Enforcement Officer before assuming it applies¹⁰.

Sources

1. Apply for a Uniform Construction Code Building Permit, quoted and re-checked
2. Apply for a Uniform Construction Code Building Permit, quoted and re-checked
3. 2017 Awarded Comprehensive Plan, quoted and re-checked
4. Act 537 Sewage Facilities, quoted and re-checked
5. Municipal On-Lot Sewage Service Areas, quoted and re-checked
6. Municipal Ordinances, quoted and re-checked
7. Apply for a Uniform Construction Code Building Permit, quoted and re-checked
8. PA DEP - On-lot Disposal System (Act 537) (2026 county census)
9. pa.gov, quoted and re-checked
10. 25 Pa. Code § 72.22. Permit issuance (Pennsylvania statewide rule), quoted and re-checked
11. Pennsylvania Uniform Construction Code, Chapter 403, quoted and re-checked
12. Uniform Construction Code (UCC) (Pennsylvania statewide rule), quoted and re-checked
13. Pennsylvania Uniform Construction Code, Chapter 403, quoted and re-checked
14. Pennsylvania Uniform Construction Code, Chapter 403, quoted and re-checked
15. Pennsylvania Construction Code Act (Pennsylvania statewide rule), quoted and re-checked
16. Local Registrations, Permits, Zoning (Pennsylvania statewide rule), quoted and re-checked
17. Butler County Municipality Links (butlercountypa.gov)
18. Butler Township (example municipality only) (butlertwp.org)
19. Butler County Economic Development & Planning (Planning Commission) (butlercountypa.gov)
20. Apply for a Uniform Construction Code Building Permit, quoted and re-checked
21. Apply for a Uniform Construction Code Building Permit, quoted and re-checked
22. Pennsylvania Municipalities Planning Code, Section 602 (Pennsylvania statewide rule), quoted and re-checked
23. Local Registrations, Permits, Zoning (Pennsylvania statewide rule), quoted and re-checked
24. 25 Pa. Code § 73.65. Recycling toilet, incinerating toilet or composting toilet (Pennsylvania statewide rule), quoted and re-checked
25. RV and Tent Campsites (Pennsylvania statewide rule), quoted and re-checked
26. Pennsylvania Uniform Construction Code, Chapter 403 (Pennsylvania statewide rule), quoted and re-checked
27. Municipal On-Lot Sewage Service Areas, quoted and re-checked
28. Butler County Subdivision and Land Development Ordinance, quoted and re-checked
29. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
30. Share of land at 15% slope or less: Bolthole Index county data
31. Wooded share of land: Bolthole Index county data
32. Apply for a Uniform Construction Code Building Permit, quoted and re-checked
33. PennsylvaniA Floodplain Development Guide (Pennsylvania statewide rule), quoted and re-checked
34. Butler County Subdivision and Land Development Ordinance, quoted and re-checked
35. Straight-line distance from the county center to the nearest city of 100,000+ people: Bolthole Index county data
36. Median property tax bill: Bolthole Index county data
37. Effective property tax rate: Bolthole Index county data
38. PA Dept. of Labor & Industry — Uniform Construction Code (2026 county census)

Written October 9, 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.