Bolthole Index

Westmoreland County, Pennsylvania

Zoning, building permits and septic rules in Derry Township, Pennsylvania

Derry Township is a township in Westmoreland County, Pennsylvania. 4 rules below are quoted from official sources and independently re-checked, most recently on November 11, 2026. Rules for unincorporated land are on the Westmoreland County page.

Answers from the rulebook for Derry Township

Derry Township’s own rules

  • Building permitRequired

    Building construction or alteration inside Derry Township, Westmoreland County

    • List is 'not limited to' the items shown; the township asks residents to call about which projects need a building permit.
    • Permit also listed for swimming pools, driveways, street openings, signs and fences.
    “permits are required for, but not limited to, the following: use and occupancy of all new construction use and occupancy of all commercial and industrial properties building construction or alteration swimming pools driveways street openings signs and fences”
  • Building code adoptedAdopted

    Derry Township, Westmoreland County, PA: Uniform Construction Code (Act 45) enforced by the township

    • Township page names a building code official who issues permits for commercial and residential projects.
    • Edition of the code adopted is not stated on the page.

    UCC opt-in date: 2004-07-01

    “derry township opted-in to the uniform construction code (act 45) on july 1st of 2004. building permits for commercial and residential projects are issued by building code official, merle musick.”
  • Certificate of occupancyRequired

    Use and occupancy of new construction and commercial/industrial properties inside Derry Township

    • Page speaks of a use and occupancy permit; the certificate itself is not described.
    • List is 'not limited to' the items shown.
    “permits are required for, but not limited to, the following: use and occupancy of all new construction use and occupancy of all commercial and industrial properties”
  • Driveway accessRequired

    Driveways and street openings on township roads inside Derry Township

    • Township forms page lists a driveway/road occupancy permit for a new driveway and excavation in roadway.
    • State roads would involve PennDOT; not verified here.
    “building construction or alteration swimming pools driveways street openings signs and fences”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Derry Township or Westmoreland County directly.

  • Owner-builder exemption — Owner-builder permit exemption inside Derry Township
  • Inspections — Building inspections inside Derry Township
  • Local zoning — Zoning inside Derry Township, Westmoreland County
  • Zoning districts — Zoning districts inside Derry Township
  • Minimum dwelling size — Minimum dwelling size inside Derry Township
21 more unanswered
  • Minimum lot size
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Subdividing land
  • 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 Derry Township publishes no rule on the point, not that none exists. Westmoreland County’s page lists the county offices to call.

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