Butler County, Pennsylvania
Penn Township is a township in Butler County, Pennsylvania. Septic permits inside Penn Township come from Penn Township. 8 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.
Residential and commercial construction inside Penn Township.
structure area threshold: >= 1000 square feet (Structures at this threshold require a Township zoning permit and a building permit.)
“Building Permits are required before construction of residential and commercial structures. Building permits are needed for all residential and commercial additions, residential houses/mobile homes, commercial construction, decks/porches over 30 inches above grade, deck/porch roofs, structural changes to the roof, commercial roofing, pools, and accessory structures over 1,000 square feet.”
On-lot sewage within Penn Township.
“These laws mandate that each municipality appoint a Sewage Enforcement Officer and an alternate Sewage Enforcement Officer to conduct on-lot testing for each undeveloped lot within the township, as well as testing for existing malfunctioning systems.”
On-lot sewage inside Penn Township.
minimum application and permit charge: >= 1200 USD (A portion may be refundable if the test fails.)
“Residents and developers are required to complete applications and obtain permits for on-lot sewage within the township. The associated sewage ordinances are available for viewing on the PDF download list on this page.”
On-lot sewage suitability for undeveloped lots and existing malfunctioning systems inside Penn Township.
“Before starting any Land Development in Penn Township, properties must undergo testing for on-lot septic suitability, as required by state law. This testing is necessary for property subdivision and construction on a vacant lot.”
On-lot sewage disposal inside Penn Township.
“Residents and developers are required to complete applications and obtain permits for on-lot sewage within the township. The associated sewage ordinances are available for viewing on the PDF download list on this page.”
Structures from 100 through 999 square feet inside Penn Township.
structure area: >= 100 square feet (Less than 1,000 square feet; zoning permit only.) · structure area: <= 999 square feet (Zoning permit only.)
“Zoning Permit Only: Structures 999 Sq. feet and but greater than 99 Sq. feet: will only require a zoning permit. Prices can be found on our current fee schedule.”
Subdivision and land development inside Penn Township.
plan submittal lead time: >= 15 working days (Before the regularly scheduled Planning Commission meeting.)
“Subdivision or Land Development: plans must be submitted 15 working days prior to the regularly scheduled meetings of the Planning Commission, which takes place on the fourth Thursday of each month.”
On-lot septic applications and permits inside Penn Township.
minimum septic application and permit charge: >= 1200 USD (Divided into categories during testing.)
“The fees for on-lot septic applications are outlined in the Penn Township Fee Schedule, also available on this site. At a minimum, the applicant will be charged $1200 per application and permit.”
We looked and could not find an official answer yet. Silence is not permission; ask Penn Township or Butler County directly.
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 Penn 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 Penn Township means bringing your own water and power. The kit we’d start with:
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.