Bolthole Index

Monmouth County, New Jersey

Building permits, zoning and septic rules in Keansburg, New Jersey

Keansburg, New Jersey requires a zoning permit and then a construction permit from the borough's own Code Enforcement and Construction Office before building work starts1. Zoning is set by the borough, not Monmouth County2. Septic and well approvals sit with the local board of health, and Keansburg is a member of the Monmouth County Board of Health3.

At a glance

Building permit
Required; issued by the borough's construction office under the state Uniform Construction Code14
Zoning
Borough zoning permit first, with a property survey; response within 10 business days1
Septic
Board of health approval; Keansburg is a Monmouth County Board of Health member53
Owner-builder
Exempt from builder registration only; permits and an owner affidavit still apply67
Inspections
Required; permit must be closed out8

Who to call

Building permits

Code Enforcement and Construction Office, Borough of Keansburg

Zoning permits, construction permits and inspections inside Keansburg

732-787-0215

29 Church Street, Keansburg, NJ 07734

Building permits

Keansburg construction permit handout

Step-by-step zoning and construction permit process

Septic permits

Monmouth County Health Department (Keansburg Board of Health)

Health officer for Keansburg; septic and well approvals

732-431-7456

Contact details are copied from each office’s official page and were checked against it on October 13, 2026.

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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Do you need a building permit in Keansburg, NJ?

Yes. Keansburg, NJ follows the statewide Uniform Construction Code, which makes it unlawful to build, alter or change the use of a structure without first filing an application and obtaining the permit4. Ordinary maintenance is the exception9. Inside Keansburg the borough also requires permits for dumpsters, tree removal, fences, concrete work and sheds of every size10. Inspections are required and the permit must be closed out, or the owner can be fined8.

Who issues building permits in Keansburg?

The borough's Code Enforcement and Construction Office at borough hall issues construction permits, not Monmouth County1112. Applications go in by hand or by mail; there is no electronic submission1. Permit fees are the sum of the subcode fees, and a plan review fee of 20% of the construction permit fee is paid first and credited back toward it13.

Does Keansburg have zoning, and what does it mean for lots and setbacks?

Yes. The borough zones its own land; the county does not2. A zoning permit request with a property survey gets an approval or denial letter within 10 business days, and a denial is appealed to the planning board1. Dimensions depend on the district14. In the R-5A Residential Redevelopment Overlay District, a detached single-family lot needs at least 4,000 square feet, with a 25-foot front yard, 6-foot side yards (12 feet combined) and a 25-foot rear yard1516. Height there is capped at 35 feet17. We could not confirm numbers for the other districts; ask the construction office.

How do septic permits work in Keansburg?

New Jersey does not allow a building permit to issue until the board of health certifies the septic and water plans, and the system must be inspected before it is covered518. Keansburg is a member of the Monmouth County Board of Health3. Whether a given lot even has a septic option, or is served by borough water and sewer, we could not confirm; call the health department or the construction office.

Can you live in an RV or tiny home in Keansburg?

We could not confirm a Keansburg rule on RV occupancy, tiny homes or accessory dwellings. New Jersey limits HUD manufactured homes to single-family use19. Ask the Code Enforcement and Construction Office before buying a lot with this plan11.

Building a home in Keansburg: the steps, in order

  1. Apply for a zoning permit with a property survey1.
  2. Take the zoning approval letter to the construction office for the construction package1.
  3. File the construction jacket and plans; the department has 20 days to review1.
  4. If the property is in a flood hazard area, an elevation certificate may be required20.
  5. Schedule every inspection and close out the permit8.
  6. Owner-builders file an affidavit before a certificate of occupancy can issue7.

What stays with Monmouth County, and what to check before you buy?

Subdivisions and site plans that affect county roads or drainage need county review, though one- and two-family site plans are exempt21. Driveways onto a state highway need a state access permit22. Monmouth County's effective property tax rate is 1.8%23. The county page has the broader picture: Monmouth County.

Watch-outs

  • Building permit and zoning approval come from the borough, so county contacts are the wrong counter for work inside Keansburg1.
  • Septic, wells, RV use and tiny-home rules inside Keansburg could not be confirmed; ask the construction office and the health department before you commit3.
  • Flood hazard areas may require an elevation certificate with the permit application20.

Sources

  1. Code Enforcement and Construction Office (Borough of Keansburg), quoted and re-checked
  2. P.L. 2013, c.106 — Municipal Land Use Law amendments (New Jersey statewide rule), quoted and re-checked
  3. Monmouth County Health Department (Keansburg Board of Health) (keansburgnj.gov)
  4. N.J.A.C. 5:23-2.14, Construction permits—when required (New Jersey statewide rule), quoted and re-checked
  5. New Jersey Statutes, R.S. 58:11-23 through 58:11-43 (New Jersey statewide rule), quoted and re-checked
  6. Builder Registration and New Home Warranty for Builders (New Jersey statewide rule), quoted and re-checked
  7. N.J.A.C. 5:23, Uniform Construction Code (New Jersey statewide rule), quoted and re-checked
  8. The construction process (Borough of Keansburg), quoted and re-checked
  9. Construction Permit Application Packet & Related Forms, quoted and re-checked
  10. Keansburg construction permit handout (keansburgnj.gov)
  11. Code Enforcement and Construction Office, Borough of Keansburg (keansburgnj.gov)
  12. P.L. 2018, c.157 — County Code Enforcement Pilot Program (New Jersey statewide rule), quoted and re-checked
  13. ecode360.com (Borough of Keansburg), quoted and re-checked
  14. P.L. 2013, c.106 (Municipal Land Use Law amendments) (New Jersey statewide rule), quoted and re-checked
  15. ecode360.com (Borough of Keansburg), quoted and re-checked
  16. ecode360.com (Borough of Keansburg), quoted and re-checked
  17. ecode360.com (Borough of Keansburg), quoted and re-checked
  18. New Jersey Statutes, R.S. 58:11-23 through 58:11-43 (New Jersey statewide rule), quoted and re-checked
  19. Manufactured/Modular Buildings Program (New Jersey statewide rule), quoted and re-checked
  20. The construction process (Borough of Keansburg), quoted and re-checked
  21. Monmouth County Development Regulations, Volume I — Application, Review and Approval Procedures, quoted and re-checked
  22. Major Access Permits (New Jersey statewide rule), quoted and re-checked
  23. Effective property tax rate: Bolthole Index county data

Written October 13, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

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.

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