Bolthole Index

Union County, New Jersey

Zoning, building permits and septic rules in Borough of Kenilworth, New Jersey

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

Answers from the rulebook for Borough of Kenilworth

Borough of Kenilworth’s own rules

  • Local zoningPresent

    Land inside Kenilworth borough.

    • Chapter 120 was adopted by the Mayor and Council on 2015-09-23 by Ordinance 2015-05.
    “HISTORY: Adopted by the Mayor and Council of the Borough of Kenilworth 9-23-2015 by Ord. No. 2015-05.”
  • Zoning districtsPublished

    Land inside Kenilworth borough.

    • The zoning map is incorporated into the land-use chapter and kept by the Zoning Officer and Borough Engineer.
    “the Borough is hereby divided into 16 classes of land use districts, including overlay zones”
  • Minimum lot sizeSpecified

    Single-family residential development in R-5.

    • Minimum lot width and frontage are 50 feet.

    minimum lot area: >= 5000 square feet

    “Minimum lot size. Every lot shall contain a minimum lot area of 5,000 square feet.”
    One more reviewed finding on this topic
    • Specified — Single-family residential development in R-6.
      “Minimum lot size. Every lot shall contain a minimum lot area of 6,000 square feet.”
  • Building heightSpecified

    Principal buildings in R-5.

    • A proposed addition may match the existing nonconforming height of the principal dwelling.

    maximum height: <= 35 feet (maximum 2.5 habitable floors exclusive of basement)

    “No principal building shall exceed the maximum of 2 1/2 habitable floors, exclusive of basement, and 35 feet. The height of a proposed addition may match the existing nonconforming height of the principal dwelling.”
    One more reviewed finding on this topic
    • Specified — Principal buildings in R-6.
      “No principal building shall exceed the maximum of 2 1/2 habitable floors, exclusive of basement, and 35 feet. The height of a proposed addition may match the existing nonconforming height of the principal dwelling.”
  • Permit processPublished (with conditions)

    Construction-permit applications submitted to the Kenilworth Building Department.

    • Completed applications include prior approvals.
    • Subcode officials review plans and the Construction Official gives final sign-off.
    • The responsible party is notified of the calculated permit cost.

    processing period: <= 20 business days (completed application including prior approvals)

    “the Building Department has 20 business days to prepare your permit.”

Rules another office applies inside Borough of Kenilworth

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

  • Owner-builder exemptionAvailable (with conditions)

    A person constructing a new home inside Kenilworth borough for personal use.

    • This is a builder-registration and warranty exception, not an exemption from permits, inspections, or construction codes.
    “The only exception is a person who constructs a new home for his or her own personal use.”

Still unanswered

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

  • Minimum dwelling size — Residential districts inside Kenilworth borough.
  • Living in an RV — RV occupancy on private land inside Kenilworth borough.
  • Camping on your land — Temporary camping inside Kenilworth borough.
  • Tiny homes — Tiny-home occupancy inside Kenilworth borough.
  • Manufactured homes — Manufactured-home occupancy inside Kenilworth borough.
11 more unanswered
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Subdividing land
  • 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 Kenilworth publishes no rule on the point, not that none exists. Union County’s page lists the county offices to call.

Off-grid gear

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

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