Bolthole Index

Montgomery County, Pennsylvania

Zoning, building permits and septic rules in Borough of Bryn Athyn, Pennsylvania

Borough of Bryn Athyn is a borough in Montgomery County, Pennsylvania. Borough of Bryn Athyn adopts its own zoning, so inside its limits Borough of Bryn Athyn’s rules apply, not the county’s. 8 rules below are quoted from official sources and independently re-checked, most recently on November 12, 2026. Rules for unincorporated land are on the Montgomery County page.

Answers from the rulebook for Borough of Bryn Athyn

Borough of Bryn Athyn’s own rules

  • Local zoningPresent

    All land inside Bryn Athyn borough

    • Ordinance amended August 3, 2020 and September 9, 2024
    “it shall become effective on december 3, 2018, at which time "the bryn athyn zoning ordinance of 1982" is repealed.”
  • Zoning districtsPublished

    Zoning districts inside Bryn Athyn borough

    • Districts: A, B, C low/medium/high density single family; MD; E commercial; LI; IN institutional; NP; CL cluster; SS steep slope; FP repealed
    “article 5 "a" - low density single family residential districts 13 article 6 "b" - medium density single family residential districts 15”
  • Minimum lot sizeSpecified

    A low density single family residential district, Bryn Athyn borough

    • Other districts (B, C, MD etc.) not extracted

    minimum lot area: >= 1 acre · minimum lot width at building line: >= 150 feet

    “502.1 minimum lot area and width. a lot area of not less than one acre, and a lot width of not less than one hundred and fifty (150) feet at the building line shall be provided”
  • SetbacksSpecified

    A low density single family residential district, Bryn Athyn borough

    • Interior lot side yards total at least 70 ft, neither less than 30 ft
    • Corner lot street-side yard at least 50 ft

    front yard: >= 50 feet · rear yard: >= 30 feet

    “502.2 front yard. there shall be a front yard on each lot which shall not be less than fifty (50) feet in depth from the street line.”
  • Lot coverageSpecified

    A low density single family residential district, Bryn Athyn borough

    building coverage: <= 15 percent of lot · impervious coverage: <= 30 percent of lot

    “502.5 building coverage. not more than fifteen (15) percent of the lot area shall be occupied by buildings.”
  • Building heightSpecified

    A low density single family residential district, Bryn Athyn borough

    • Detached garage max 20 ft; other accessory structures max 15 ft

    principal building height: <= 35 feet

    “501.1 no principal building shall exceed thirty-five (35) feet in height. 501.2 a detached garage shall not exceed twenty (20) feet in height and all other accessory structures shall not exceed fifteen (15) feet in height.”
  • Agricultural exemptionConditional

    Farming in A district, Bryn Athyn borough (zoning use allowance, not a permit exemption)

    • Minimum lot area 5 acres
    • No farming within 100 ft of any property line
    • Not within 200 ft of abutting residential lots
    • Farm animals: 5 acres, max five animals, enclosed 100 ft from property lines
    “farming (agriculture), provided the following criteria are met: 1. minimum lot area five (5) acres. 2. no farming activity may take place within one hundred (100) feet of any property line; no farming activity shall take place within two hundred (200) feet of any abutting lot zoned for or used for residential purposes.”
  • Permit processPublished (with conditions)

    Zoning permits inside Bryn Athyn borough

    • Zoning permit only; building (UCC) permit process not verified
    • Percolation tests per Montgomery County health department if on-site sewage planned
    “no building shall be constructed or altered in the borough, or the use of any building changed, or vacant land occupied until a zoning permit is secured from the zoning officer.”

Still unanswered

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

  • Building permit — Building permits inside Bryn Athyn borough
  • Owner-builder exemption — Owner-builder exemption inside Bryn Athyn borough
  • Building code adopted — Building code inside Bryn Athyn borough
  • Inspections — Building inspection inside Bryn Athyn borough
  • Certificate of occupancy — Certificate of occupancy inside Bryn Athyn borough
17 more unanswered
  • Minimum dwelling size
  • 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
  • Subdividing land
  • Driveway access
  • Building in a floodplain
  • Short-term rentals
  • Permit fees

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 Bryn Athyn publishes no rule on the point, not that none exists. Montgomery County’s page lists the county offices to call.

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