Zoning, building permits and septic rules in Washington Township, Pennsylvania
Washington Township is a township in Butler County, Pennsylvania. Septic permits inside Washington Township come from Washington Township. 5 rules below are quoted from official sources and independently re-checked, most recently on November 9, 2026. Rules for unincorporated land are on the Butler County page.
Answers from the rulebook for Washington Township
Rules another office applies inside Washington Township
Washington Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Building permitRequired
Construction or building work inside Washington Township subject to Pennsylvania's UCC.
Emergency repairs or equipment replacements may proceed without a permit if an application is submitted to the building code official within three business days.
Township directory identifies Richardson Inspection Services, LLC as the Building Code Officer and Third Party UCC Inspection Agency.
“building permit before starting any work”
InspectionsRequired
UCC-covered construction and listed systems inside Washington Township, Butler County, Pennsylvania.
The UCC source describes inspections as necessary in several cases, including construction or changes to commercial or residential buildings; electrical, gas, mechanical, or plumbing systems; pools or hot tubs; and specified manufactured or industrialized housing work.
The Township directory identifies Richardson Inspection Services, LLC as the Third Party UCC Inspection Agency.
“Inspections are also necessary in several cases”
Certificate of occupancyRequired
Buildings or facilities inside Washington Township that are subject to the UCC.
A certificate is required before the building or facility can be used.
“before a building or facility can be used”
Who permits septicLocal (with conditions)
On-lot or onsite septic systems inside Washington Township, Butler County, Pennsylvania.
The state rule identifies exceptions for large-volume on-lot systems.
“Local Agencies are responsible for [...] permitting and enforcement activities.”
Septic permitRequired
Retaining tanks and individual or community on-lot systems renovating effluent in a soil absorption area or spray field inside Washington Township.
Exception stated for large-volume on-lot systems.
The Township directory names Collin Fantaskey as Sewage Enforcement Officer.
“local agencies are responsible for issuing permits for retaining tanks”
Still unanswered
We looked and could not find an official answer yet. Silence is not permission; ask Washington Township or Butler County directly.
Owner-builder exemption — Owner-builder construction inside Washington Township.
Local zoning — Land inside Washington Township, Butler County, Pennsylvania.
Zoning districts — Land inside Washington Township.
Minimum dwelling size — Dwellings inside Washington Township.
Minimum lot size — Residential lots inside Washington Township.
17 more unanswered
Setbacks
Lot coverage
Building height
Living in an RV
Camping on your land
Tiny homes
Manufactured homes
Accessory dwellings
Septic inspection
Well permit
Mandatory utility hookup
Agricultural exemption
Driveway access
Building in a floodplain
Short-term rentals
Permit fees
Permit process
Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.
Unanswered questions are usually a sign that Washington Township publishes no rule on the point, not that none exists. Butler County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Washington Township means bringing your own water and power. The kit we’d start with:
