Bolthole Index

Union County, New Jersey

Zoning, building permits and septic rules in the Borough of Garwood, NJ

Building in the Borough of Garwood, Union County, New Jersey requires a construction permit, and all building permits are handled through the Cranford Building Department under a shared service12. Garwood sets its own zoning, with named districts and dimensional rules3. Who handles septic permits inside the borough is not confirmed, so ask the Borough of Garwood before planning an on-site system4.

At a glance

Building permit
Required; issued by the Cranford Building Department under a shared service with Cranford12
Zoning
Yes, set by the borough; districts include RA, RA1, RB, CBD, GBD, CC, LI, ID, T, POS, PL and MUD35
Height limit (RA and RA1)
2 1/2 stories and 30 feet maximum for single-family detached homes67
Septic
Not confirmed for Garwood; state law requires the board of health having jurisdiction to certify septic facilities before a building permit issues8
RV living
Not confirmed; ask the borough planning and zoning office4
Tiny homes
State code adopts a tiny house appendix; borough zoning for tiny homes not confirmed9
Owner-builder
Owners may build their own home but still need permits and inspections; an affidavit is required1011

Who to call

Planning & zoning

Borough of Garwood Planning & Zoning

Zoning, planning board and zoning board applications, and the borough land use code (Chapter 106); the borough's main office line also answers general questions

908-789-0710

403 South Ave, Garwood, NJ 07027

Building permits

Cranford Building Department (serving Garwood)

Construction permits and building inspections for the Borough of Garwood, under a shared service with the Township of Cranford

908-709-7213

building@cranfordnj.org

8 Springfield Avenue, Cranford, NJ 07016

Planning & zoning

Union County Planning Board

Reviews site plans and subdivision applications as they may affect county roads and drainage facilities

908-527-4268

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 Garwood means bringing your own water and power. The kit we’d start with:

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Does Garwood, NJ have zoning, and what does it mean for lot size, setbacks and height?

Yes. The Borough of Garwood, in Union County, is divided into zones differentiated by use and bulk regulations3. The borough code identifies RA, RA1, RB, CBD, GBD, CC, LI, ID, T, POS, PL, and MUD districts, and the zoning map is on file in the Borough Clerk's office5. Union County itself has no zoning power, so the borough is the office that decides12.

The numbers depend on the district. For single-family detached homes in the RA zone, the front yard is 25 feet minimum and 35 feet maximum, the rear yard is 25% of lot depth but never under 35 feet, and each side yard is 10% of lot width but never under five feet13. In the RA1 zone the front yard is 40 feet minimum14. Impervious surfaces may cover no more than 60% of an RA lot15, and RA homes top out at 2 1/2 stories and 30 feet6.

Confirm your lot's district with the borough's planning and zoning office before you rely on any of these figures4.

Do you need a building permit in Garwood, NJ, and who issues it?

Yes. New Jersey's Uniform Construction Code requires a construction permit for new construction and for structural, plumbing, mechanical and electrical work on existing buildings; ordinary maintenance such as routine repair is excepted1.

In Garwood the permit does not come from borough hall. The borough's own planning and zoning page states: "The Borough of Garwood has a shared service with the Township of Cranford for Construction Code Services. All building permits are handled through the building department in Cranford."4 The Cranford Building Department, at 8 Springfield Avenue in Cranford, takes Garwood applications by phone or email16.

Under the state code, a complete application must be released or denied within 20 business days17. Fees are set by each municipality by ordinance, so ask the Cranford Building Department for the current schedule18.

How do septic permits and wells work in Garwood, NJ?

We could not confirm which office issues septic permits inside Garwood, or whether the borough has any rule on wells, so call the borough's main office before you plan an on-site system4.

State law sets the frame. No building permit may issue until the board of health having jurisdiction certifies that the proposed water supply and sewerage facilities comply with state standards8. A septic tank or tile field may not be covered from view until a board of health representative inspects it and gives permission19. For wells, the state Department of Environmental Protection issues a drilling permit, and municipal or county health officials issue the well construction permit20.

Where public sewer is available and an existing septic system is no longer suitable, state plumbing rules can require connection, as determined by the local health inspector21. Soils matter too: only about 5% of Union County soils rate "not limited" for a conventional drain field, so expect a site evaluation or an engineered system22.

Can you live in an RV or tiny home on your land in Garwood, NJ?

We could not confirm a borough rule on living in an RV, camping on private land, or placing a tiny home in Garwood, so treat each as unconfirmed and ask the borough's planning and zoning office before you buy or park anything4.

Two state facts help frame the question. New Jersey's construction code adopts an appendix for tiny houses, but a tiny house must still meet the Uniform Construction Code and local land-use, utility, septic and other approvals9. Manufactured HUD homes are limited under the state code to use group R-5, single-family dwellings23.

Because Garwood's zoning code prohibits any use not expressly permitted3, an RV or tiny home used as a dwelling needs a clear yes from the zoning office, not just an absence of a rule.

How do you build a home in Garwood, NJ? The steps, in order

  1. Confirm the zoning district and its setback, coverage and height rules with the Garwood planning and zoning office54.
  2. Settle water and sewage: the board of health having jurisdiction must certify the water supply and sewerage facilities before a building permit can issue8.
  3. File the construction permit application with the Cranford Building Department216. An owner who builds or supervises the work files a Department of Community Affairs affidavit11.
  4. Wait for release of the permit; no permit issues until all required state, county and local approvals are in place24.
  5. Stop for the required inspections, including footing trenches and rough plumbing and electrical before framing25.
  6. Obtain a certificate of occupancy after final inspections26.

What stays with Union County, and what should you check before buying in Garwood?

Union County does not issue building permits or zoning approvals for Garwood; it reviews subdivision and site plans that affect county roads and drainage facilities, after municipal planning board action2728. A driveway or other access onto a State highway needs a state access permit29.

Before you buy, confirm the lot's zoning district, ask the Cranford Building Department about permit fees, and ask the borough who handles septic and wells at the address416.

Costs are county-level: the typical home value in Union County is $641,17430, with an effective property tax rate of 2%31 and a median property tax bill of $10,001 a year32.

Watch-outs

  • Garwood's building permits are issued by the Cranford Building Department in Cranford, not by Garwood borough hall2.
  • We could not confirm who issues septic permits or well permits inside Garwood, or any borough rule on RVs, camping or tiny homes; ask the borough office at 908-789-07104.
  • The owner-builder exception covers new-home-builder registration only; it is not an exemption from construction permits or inspections10.
  • Garwood's zoning code states that uses not expressly permitted are prohibited, so a use you do not see listed in your district is not allowed by default3.

Sources

  1. The New Jersey State Uniform Construction Code: General Information, quoted and re-checked
  2. Planning & Zoning - Garwood, NJ (Borough of Garwood), quoted and re-checked
  3. Article VIII: Zone Regulations - Borough of Garwood, NJ (Borough of Garwood), quoted and re-checked
  4. Borough of Garwood Planning & Zoning (garwood.org)
  5. Article VIII: Zone Regulations - Borough of Garwood, NJ (Borough of Garwood), quoted and re-checked
  6. Article VIII: Zone Regulations - Borough of Garwood, NJ (Borough of Garwood), quoted and re-checked
  7. Article VIII: Zone Regulations - Borough of Garwood, NJ (Borough of Garwood), quoted and re-checked
  8. New Jersey Statutes, R.S. 58:11-23 through 58:11-43 (New Jersey statewide rule), quoted and re-checked
  9. N.J.A.C. 5:23 Uniform Construction Code, quoted and re-checked
  10. New Jersey Uniform Construction Code consumer information (Borough of Garwood), quoted and re-checked
  11. N.J.A.C. 5:23-2.15 Construction permits--application, quoted and re-checked
  12. P.L. 2013, c.106 — Municipal Land Use Law amendments (New Jersey statewide rule), quoted and re-checked
  13. Article VIII: Zone Regulations - Borough of Garwood, NJ (Borough of Garwood), quoted and re-checked
  14. Article VIII: Zone Regulations - Borough of Garwood, NJ (Borough of Garwood), quoted and re-checked
  15. Article VIII: Zone Regulations - Borough of Garwood, NJ (Borough of Garwood), quoted and re-checked
  16. Cranford Building Department (serving Garwood) (garwood.org)
  17. The New Jersey State Uniform Construction Code: General Information, quoted and re-checked
  18. New Jersey Uniform Construction Code General Information, quoted and re-checked
  19. New Jersey Statutes, R.S. 58:11-23 through 58:11-43 (New Jersey statewide rule), quoted and re-checked
  20. Bulletin 88-10: Private On-Site Water Supply Systems (New Jersey statewide rule), quoted and re-checked
  21. New Jersey Uniform Construction Code Plumbing Subcode Regulations (New Jersey statewide rule), quoted and re-checked
  22. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  23. Manufactured/Modular Buildings Program (New Jersey statewide rule), quoted and re-checked
  24. New Jersey Uniform Construction Code, N.J.A.C. 5:23 (New Jersey statewide rule), quoted and re-checked
  25. New Jersey Department of Community Affairs, New Home Warranty—Consumer Information (New Jersey statewide rule), quoted and re-checked
  26. New Jersey Uniform Construction Code consumer information (Borough of Garwood), quoted and re-checked
  27. Union County Planning Board, quoted and re-checked
  28. Union County Planning Board (ucnj.org)
  29. Major Access Permits (New Jersey statewide rule), quoted and re-checked
  30. Typical home value (Zillow): Bolthole Index county data
  31. Effective property tax rate: Bolthole Index county data
  32. Median property tax bill: 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 Garwood

Borough of Garwood’s own rules

  • Local zoningPresent

    All land, structures, and uses inside Garwood borough.

    • The code states that zoning affects all land, structures, and uses and that uses not expressly permitted are prohibited.
    “For the purposes of this chapter, the Borough of Garwood is hereby divided into zones differentiated as to use and bulk regulations and to be designated as follows:”
  • Zoning districtsPublished

    Land inside Garwood borough.

    • The zoning map is incorporated into the chapter and is on file in the Borough Clerk's office.
    • The code identifies RA, RA1, RB, CBD, GBD, CC, LI, ID, T, POS, PL, and MUD districts.
    “For the purposes of this chapter, the Borough of Garwood is hereby divided into zones differentiated as to use and bulk regulations and to be designated as follows:”
  • SetbacksSpecified

    Single-family detached dwellings in the RA Zone.

    • Rear yard is 25% of lot depth and not less than 35 feet.
    • Side yard is 10% of lot width on both sides and not less than 5 feet.
    • Corner-lot side yard follows 50% of the required front-yard setback on the side street and is not less than 10 feet.

    front setback minimum: >= 25 feet (maximum 35 feet) · rear setback: 25% of lot depth, minimum 35 feet · side setback: 10% of lot width, minimum 5 feet (corner lot minimum 10 feet)

    “Front: 25 feet minimum and 35 feet maximum. Rear: 25% of the lot depth, except that in no event will a rear yard be less than 35 feet. Side: 10% of the lot width on both sides, except that in no case will a side yard be less than five feet.”
    One more reviewed finding on this topic
    • Specified — Single-family detached dwellings in the RA1 Zone.
      “Front: 40 feet minimum. Rear: 25% of the lot depth, except that in no case will a rear yard be less than 35 feet. Side: 10% of the lot width on both sides, except that in no case will a side yard be less than five feet.”
  • Lot coverageSpecified

    Single-family detached dwellings in the RA Zone.

    maximum impervious lot coverage: <= 60 percent

    “Impervious lot coverage: Impervious surfaces shall cover no more than 60% of the lot.”
    One more reviewed finding on this topic
  • Building heightSpecified

    Single-family detached dwellings in the RA Zone.

    maximum height: <= 30 feet (2 1/2 stories maximum)

    “Height: 2 1/2 stories and 30 feet maximum.”
    One more reviewed finding on this topic
  • Permit processPartial

    Construction-permit processing for work inside Garwood borough.

    • Garwood has a shared service with Cranford for construction-code services.
    • All building permits are handled through the Cranford Building Department.
    • The reviewed source did not provide all forms, review stages, fees, or inspection scheduling details.
    “The Borough of Garwood has a shared service with the Township of Cranford for Construction Code Services. All building permits are handled through the building department in Cranford.”

Rules another office applies inside Borough of Garwood

Borough of Garwood 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 for that person's own personal use in Garwood borough.

    • The state source identifies an exception to new-home-builder registration for a person constructing a new home for personal use.
    • This is a builder-registration exception and does not establish exemption from construction permits, inspections, zoning, or other requirements.
    “The only exception is a person who constructs a new home for his or her own personal use.”
  • Building code adoptedAdopted

    Construction inside Garwood borough under New Jersey's Uniform Construction Code.

    • New Jersey's UCC contains administrative and enforcement rules and building, electrical, fire-protection, and plumbing subcodes.
    • Garwood uses a shared construction-code service with Cranford for local administration.
    “All construction work performed in the State is regulated by the Uniform Construction Code (UCC), which contains rules relating to the administration and enforcement of the code as well as four basic technical subcodes: building, electrical, fire protection, and plumbing.”
  • InspectionsRequired

    Permitted construction inside Garwood borough, administered locally through the Garwood-Cranford shared service.

    • Inspections occur periodically during construction and at specified stages; inspectors need not be continuously present.
    • Garwood shares building-inspection services with Cranford.
    “During construction, the code official or inspector conducts regular inspections to ensure that the work performed complies with the UCC.”
  • Certificate of occupancyRequired

    New or permitted construction inside Garwood borough after required final inspections.

    • The construction official issues the certificate after the project passes final inspections.
    • Garwood's local construction-code services are shared with Cranford.
    “Once a construction project passes final inspections, the builder certifies that the project complies with the UCC and the construction official issues a Certificate of Occupancy.”

Still unanswered

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

  • Building permit — Construction inside Garwood borough.
  • Minimum dwelling size — Single-family residential districts inside Garwood borough.
  • Living in an RV — RV occupancy or placement on land inside Garwood borough.
  • Camping on your land — Temporary camping on private land inside Garwood borough.
  • Tiny homes — Tiny-home occupancy inside Garwood borough.
9 more unanswered
  • Manufactured homes
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access

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 Garwood publishes no rule on the point, not that none exists. Union County’s page lists the county offices to call.

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