Mercer County, Pennsylvania
Hermitage is a city in Mercer County, Pennsylvania. Hermitage adopts its own zoning, so inside its limits Hermitage’s rules apply, not the county’s. 13 rules below are quoted from official sources and independently re-checked, most recently on November 12, 2026. Rules for unincorporated land are on the Mercer County page.
Residential and commercial construction inside Hermitage city
“the city of hermitage adopts and enforces the international code series for commercial and residential construction as mandated through the uniform construction code of the commonwealth of pennsylvania.”
Land inside Hermitage city, Mercer County, PA
“the zoning ordinance and zoning map are officially adopted and amended by the hermitage board of commissioners”
Zoning districts inside Hermitage city
“§ 27-302. rr - rural residential district.”
SR1 suburban residential district, inside Hermitage city
minimum dwelling size: >= 750 square feet
“this table is subject to the size limitations of § 301.60.9m. minimum dwelling size 750 square feet minimum lot area 12,000 square feet minimum lot width corner lot 100 feet”
“302.30. lot, yard and height requirements for rr. minimum dwelling size 750 square feet minimum lot area 20,000 square feet minimum lot width corner lot 120 feet”
RR rural residential district, inside Hermitage city
minimum lot area: >= 20000 square feet
“minimum dwelling size 750 square feet minimum lot area 20,000 square feet minimum lot width corner lot 120 feet interior lot 100 feet”
“minimum dwelling size 750 square feet minimum lot area 12,000 square feet minimum lot width corner lot 100 feet interior lot 80 feet”
RR rural residential district, inside Hermitage city
front yard, major road: >= 50 feet · front yard, secondary road: >= 35 feet · rear yard, principal building: >= 50 feet · rear yard, accessory building: >= 10 feet
“minimum front yard major road 50 feet secondary road 35 feet minimum rear yard principal building 50 feet accessory building 10 feet minimum side yard interior lot line principal building 12 feet accessory building 10 feet street side corner lot principal/accessory building 35 feet”
“minimum front yard major road 50 feet secondary road 35 feet minimum rear yard principal building 40 feet accessory building 5 feet minimum side yard interior lot line principal building 8 feet accessory building 5 feet street side corner lot principal/accessory building 30 feet”
RR rural residential district, inside Hermitage city
maximum lot coverage: <= 20 percent
“accessory building 25 feet maximum lot coverage 20%”
“maximum structure height principal building 45 feet accessory building 25 feet maximum lot coverage 25%”
RR rural residential district, inside Hermitage city
maximum height, principal building: <= 45 feet · maximum height, accessory building: <= 25 feet
“maximum structure height principal building 45 feet”
“maximum structure height principal building 45 feet accessory building 25 feet maximum lot coverage 25%”
We looked and could not find an official answer yet. Silence is not permission; ask Hermitage or Mercer 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 Hermitage publishes no rule on the point, not that none exists. Mercer County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Hermitage means bringing your own water and power. The kit we’d start with:
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