Bolthole Index

Westmoreland County, Pennsylvania

Zoning, building permits and septic rules in Borough of Irwin, Pennsylvania

Borough of Irwin is a borough in Westmoreland County, Pennsylvania. Borough of Irwin adopts its own zoning, so inside its limits Borough of Irwin’s rules apply, not the county’s. 7 rules below are quoted from official sources and independently re-checked, most recently on October 24, 2026. Rules for unincorporated land are on the Westmoreland County page.

Answers from the rulebook for Borough of Irwin

Borough of Irwin’s own rules

  • InspectionsLimited

    Work authorized by zoning permits inside Irwin borough limits.

    • The Zoning Officer examines progress as stated in specific permit applications; the excerpt does not establish a complete UCC inspection schedule.
    “Examine the progress of the work as stated in specific permit applications to ensure that it is proceeding according to the stated information in that application.”
  • Local zoningPresent (with conditions)

    Land inside Irwin borough limits.

    • Chapter 260 was adopted by Borough Council on April 9, 2014, with amendments noted where applicable.
    “[HISTORY: Adopted by the Borough Council of the Borough of Irwin 4-9-2014 by Ord. No. 924.”
  • Off-grid sanitationLimited

    Sewage receptacles at properties inside Irwin borough limits where municipal sewer is accessible.

    • The restriction is conditioned on sewer accessibility.
    “From and after the passage of this article it shall be unlawful in areas where public sanitary sewers have been provided and where the owner or owners of premises have connected with the public sanitary sewer, or are by this article duty-bound so to do, to connect the occupied buildings with a privy, privy vault, cesspool, septic tank or any other type of disposal receptacle or structure.”
  • Mandatory utility hookupSewer (with conditions)

    Properties inside Irwin borough limits where municipal sewer is accessible.

    • The opened official code page identifies the rule as applicable where sewer is accessible; the page opening did not expose a distance measurement.
    “Hereinafter, as public sanitary sewers are provided in areas of the Borough, the owners of all occupied buildings accessible to such public sanitary sewers so laid and provided shall, within 90 days, connect or cause to be connected the said occupied buildings with the sanitary sewer to which the property is accessible in the manner hereinafter provided.”
  • Permit feesVariable (with conditions)

    Borough zoning and use-permit applications inside Irwin borough limits.

    • Fees are set by Borough Council resolution and are payable with the application.
    • The fee schedule amount was not available on the opened code page.
    “An applicant for a permit of either kind shall pay a fee, to be set by Council by way of resolution, with the application.”
  • Permit processPublished (with conditions)

    Borough zoning and use-permit applications inside Irwin borough limits.

    • Application must be filed with the Zoning Officer.
    • Approval follows review of application materials and, for occupancy permits or when otherwise appropriate, an inspection of the premises.
    “Zoning and use permits may only be obtained after the filing of an application with the Zoning Officer and approval by him or her of the application following a review of all application materials and an inspection of the premises, where the application is for an occupancy permit or where the Zoning Officer otherwise deems the same appropriate.”

Rules another office applies inside Borough of Irwin

Borough of Irwin does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

  • Certificate of occupancyRequired

    Construction or occupancy of buildings and structures inside Irwin borough limits.

    • A zoning permit alone does not permit construction or occupancy.
    • The certificate requirement is pursuant to the Pennsylvania Uniform Construction Code, as amended.
    “The issuance of a zoning permit does not permit construction or occupancy of building or structure. A certificate of occupancy is also required pursuant to the Pennsylvania Uniform Construction Code, as amended.”

Still unanswered

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

  • Owner-builder exemption — Owner-built residential construction inside Irwin borough limits.
  • Minimum dwelling size — Dwellings inside Irwin borough limits.
  • Minimum lot size — Residential lots inside Irwin borough limits.
  • Setbacks — Structures inside Irwin borough limits.
  • Lot coverage — Lots inside Irwin borough limits.
14 more unanswered
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Well permit
  • Agricultural exemption
  • Driveway access
  • Building in a floodplain
  • Short-term rentals

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 Borough of Irwin publishes no rule on the point, not that none exists. Westmoreland County’s page lists the county offices to call.

Off-grid gear

Going off-grid in Borough of Irwin means bringing your own water and power. The kit we’d start with:

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