Bolthole Index

Monmouth County, New Jersey

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

Borough of Keansburg is a borough in Monmouth County, New Jersey. 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 Monmouth County page.

Answers from the rulebook for Borough of Keansburg

Borough of Keansburg’s own rules

  • Building code adoptedAdopted (with conditions)

    Building construction and housing fitness inside Keansburg borough.

    • The Borough accepts and adopts the New Jersey State Housing Code and State Uniform Construction Code as standards.
    “Pursuant to N.J.S.A. 40:49-51.1, the New Jersey State Housing Code as approved by the Department of Community Affairs and the State Uniform Construction Code, P.L. 1975 C.217 (C. 52:27D-119, et seq.) and any rules or regulations adopted thereunder, are hereby accepted, adopted and established as a standard to be used as a guide in determining the fitness of a building for human habitation or occupancy or use.”
  • InspectionsRequired

    Permitted construction inside Keansburg borough.

    • Applicants must schedule all required inspections and close out the permit; failure may result in fines.
    “You must schedule all required inspections and the permit must eventually be closed out, or you can be subject to fines.”
  • Building in a floodplainLimited

    Building-permit applications for property inside a designated flood hazard area in Keansburg borough.

    • An elevation certificate may be required with the building-permit application if the property is in a designated flood hazard area.
    • The handout also states that all required inspections must be scheduled and permits closed out.
    “You MAY be required to submit an elevation certificate with your application for a building permit if your property is in a designated flood hazard area.”
  • Permit feesPublished (with conditions)

    Construction permits inside Keansburg borough.

    • Construction permit fees are the sum of subcode fees in Schedules A through D and are paid before permit issuance.
    • Plan review fee is 20% of the construction-permit fee and is paid before plans are reviewed; it is credited toward the construction-permit fee.
    • An additional surcharge of $0.0006 per cubic foot of new construction is collected.

    plan review fee: 20 percent of construction permit fee (credited toward construction permit fee) · new construction surcharge: 0.0006 USD per cubic foot

    “The fee for plan review shall be 20% of the amount to be charged for the construction permit and shall be paid before the plans are reviewed. The amount paid for this fee shall be credited toward the amount of the fee to be charged for the construction permit.”
  • Permit processPublished (with conditions)

    Zoning and construction permit applications inside Keansburg borough.

    • Zoning permit request must include a property survey; official response is stated as within 10 business days.
    • After zoning approval, applicant obtains the construction package, completes the construction jacket and technical sheets/plans, and the building department has 20 days to review.
    • Applications must be submitted in person or by mail; no electronic submissions.

    zoning response period: <= 10 business days (official handout states applicant will receive approval or denial within this period) · building department review period: <= 20 days (handout says actual process usually takes no longer than 2 weeks)

    “Apply for a Zoning permit. You must submit your request with a property survey. Within 10 business days you will receive a letter of approval or denial.”

Rules another office applies inside Borough of Keansburg

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

  • Minimum lot sizeSpecified

    Detached single-family residential redevelopment in the R-5A Residential Redevelopment Overlay District.

    • The residential redevelopment must be a conditional use in R-5A.
    • The redevelopment area must be at least 10,000 square feet and detached single-family dwellings require 4,000 square feet minimum lot area.

    minimum area to be redeveloped: >= 10000 sq ft · minimum lot area for detached single-family dwelling: >= 4000 sq ft

    “Minimum area to be redeveloped: 10,000 square feet. [...] Minimum lot area: [...] Detached single family dwelling - 4,000 square feet.”
  • SetbacksSpecified

    Detached single-family residential redevelopment in the R-5A Residential Redevelopment Overlay District.

    • Minimum front yard is 25 feet.
    • For a detached single-family principal building, each side yard is 6 feet and combined side yards must be at least 12 feet.
    • Principal-building rear yard is 25 feet; accessory-building rear yard is 5 feet.

    minimum front yard setback: 25 ft · minimum side yard setback: 6 ft (combined side yards not less than 12 feet) · minimum principal building rear yard setback: 25 ft · minimum accessory building rear yard setback: 5 ft

    “Minimum front yard setback: 25 feet. [...] Detached single family - six feet provided that the combined side yard shall not be less than 12 feet. [...] Principal building (all types): 25 feet. Accessory building or structure: 5 feet.”
  • Building heightSpecified

    Residential redevelopment in the R-5A Residential Redevelopment Overlay District.

    • The maximum applies to residential redevelopment under § 22-6.9.

    maximum height: <= 35 ft (2 1/2 stories maximum)

    “Maximum height 2 1/2 stories not to exceed 35 feet.”

Still unanswered

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

  • Owner-builder exemption — Owner-builder construction inside Keansburg borough.
  • Minimum dwelling size — Residential districts inside Keansburg borough; the adopted schedule is referenced but its district-specific minimum dwelling-size values were not extracted.
  • Lot coverage — Primary R-5 and R-7 single-family residential districts inside Keansburg borough.
  • Living in an RV — RV occupancy on private land inside Keansburg borough.
  • Camping on your land — Temporary camping on private land inside Keansburg borough.
12 more unanswered
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Subdividing land
  • Driveway access
  • 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 Keansburg publishes no rule on the point, not that none exists. Monmouth County’s page lists the county offices to call.

Off-grid gear

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

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