Mercer County, Pennsylvania
Otter Creek Township is a township in Mercer County, Pennsylvania. Otter Creek Township adopts its own zoning, so inside its limits Otter Creek Township’s rules apply, not the county’s. 13 rules below are quoted from official sources and independently re-checked, most recently on October 31, 2026. Rules for unincorporated land are on the Mercer County page.
Land inside Otter Creek township's limits, Mercer County, Pennsylvania: the township adopts and administers its own zoning ordinance
“the "zoning ordinance" regulates and restricts within the boundaries of the township of otter creek, mercer county, pennsylvania:”
Self-contained mobilehomes placed in Otter Creek township; a site-built single-family minimum floor area was not separately confirmed
minimum floor area, self-contained mobilehome: >= 750 sq ft
“500.2: mobilehomes, provided: (a) self contained mobilehome unit must have a floor area of 750 square feet or more, provided they conform to all regulations applicable to single-family dwellings.”
Single-family dwelling lots in the R-1 zoning district inside Otter Creek township
minimum lot area, single-family dwelling, R-1 district: >= 37500 sq ft (DEP approval of water supply and sanitary sewage plan required (table footnote)) · minimum lot width, interior lot, R-1 district: >= 150 ft · minimum lot width, corner lot, R-1 district: >= 170 ft
“minimum lot area * - single-family dwelling - two-family dwelling - multi-family dwelling 1 - boarding, lodging, rooming house 2 - convalescent home 3 37,500 sq. ft. 40,000 sq. ft. 24,000 sq. ft. 24,000 sq. ft. 40,000 sq. ft. minimum lot width - interior lot - corner lot 150 ft. 170 ft.”
Principal and accessory structures in the R-1 zoning district inside Otter Creek township
minimum rear yard setback, principal structure, R-1: >= 35 ft · minimum rear yard setback, accessory structure, R-1: >= 10 ft · minimum side yard, one side, interior lot, principal and accessory use, R-1: >= 10 ft · minimum side yard, street side on corner lot, R-1: >= 25 ft
“minimum rear yard setback - principal structure - accessory structure 35 ft. 10 ft. minimum side yard - one side - principal & accessory use - interior lot - street side on corner lot 10 ft. 25 ft.”
Lot coverage by buildings in the R-1 zoning district inside Otter Creek township
maximum lot coverage including accessory structures, R-1: <= 25 percent
“maximum lot coverage (including accessory 25% structures)”
Principal and accessory structures in the R-1 zoning district inside Otter Creek township
maximum structure height, principal structure, R-1: <= 40 ft · maximum structure height, accessory structure, R-1: <= 40 ft
“maximum structure height - principal structure - accessory structure 40 ft. 40 ft.”
Storage or parking of a recreational vehicle on a lot inside Otter Creek township
maximum recreational vehicles stored per lot: <= 1 count (plus one non-agricultural commercially licensed vehicle)
“503.5: storage or parking of a recreational vehicle or non-agricultural commercially licensed vehicle, provided: (a) it shall comply with the height and area regulations for accessory structures. (b) it shall be limited to no more than one recreational vehicle and/or one nonagricultural commercially licensed vehicle. (c) it shall not be used for human habitation.”
“no recreational vehicle shall be used as a permanent dwelling or business.”
Cottage or tent camps inside Otter Creek township; general private tent camping was not addressed in the sections reviewed
setback from side or rear lot line: >= 300 ft
“(e) no tent, campsite, or building shall be located within 300 feet of any side or rear lot lines.”
Mobilehomes placed on residential lots inside Otter Creek township
minimum floor area: >= 750 sq ft
“(c) solid skirting shall be provided on all mobilehomes. (d) mobilehomes shall be placed upon a cellar foundation or a mobilehome stand made of a concrete pad or concrete piers.”
“the permit shall be valid for thirty (30) days; however, this permit may be extended upon approval of the board if: (a) the particular circumstances warrant an extension, and (b) the extension is not considered detrimental to the public interest or the general purpose of this ordinance.”
Adding one additional dwelling unit inside an existing one-family detached dwelling in a residential zoning district inside Otter Creek township
“1206.1: one-family detached dwellings for the alteration, change in intensity of use and uses of any existing one-family detached dwelling in any residential zoning district for one (1) additional dwelling unit and rooming unit provided: (1) the height regulations and yard requirements shall not be violated.”
Otter Creek Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Mobilehome parks and recreational vehicle parks inside Otter Creek township; the township ordinance defers to Mercer County subdivision and land development regulations (county rule applying in the township, not a township ordinance)
“500.3: mobilehome parks, provided: (a) they shall comply with all applicable provisions of the mercer county subdivision and land development regulations.”
We looked and could not find an official answer yet. Silence is not permission; ask Otter Creek Township 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 Otter Creek Township 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 Otter Creek Township means bringing your own water and power. The kit we’d start with:
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