Montgomery County, 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.
All land inside Bryn Athyn borough
“it shall become effective on december 3, 2018, at which time "the bryn athyn zoning ordinance of 1982" is repealed.”
Zoning districts inside Bryn Athyn borough
“article 5 "a" - low density single family residential districts 13 article 6 "b" - medium density single family residential districts 15”
A low density single family residential district, Bryn Athyn borough
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”
A low density single family residential district, Bryn Athyn borough
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.”
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.”
A low density single family residential district, Bryn Athyn borough
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.”
Farming in A district, Bryn Athyn borough (zoning use allowance, not a permit exemption)
“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.”
Zoning permits inside Bryn Athyn borough
“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.”
We looked and could not find an official answer yet. Silence is not permission; ask Borough of Bryn Athyn or Montgomery 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 Borough of Bryn Athyn publishes no rule on the point, not that none exists. Montgomery County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Borough of Bryn Athyn means bringing your own water and power. The kit we’d start with:
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