Bolthole Index

Hunterdon County, New Jersey

Zoning, building permits and septic rules in Franklin Township, New Jersey

Franklin Township in Hunterdon County, New Jersey requires a building permit before a building is erected or structurally altered1, and the township's own Land Use Ordinance sets zoning2. Septic permits are a separate process under the township's Chapter 4203, and new wells are approved by the Hunterdon County Department of Health4.

At a glance

Zoning
Yes, township Land Use Ordinance divides the township into zones2
Building permit
Required before building, altering or moving a structure1
Building code
State Uniform Construction Code, enforced by the township5
Certificate of occupancy
Required before a new building is used6
Septic permit
Required for any new or altered individual system3
Wells
New private wells approved by the Hunterdon County Department of Health4
RV and tiny home living
Not confirmed; uses not specifically permitted in a zone are prohibited2

Who to call

Building permits

Franklin Township Construction Department

Building permits and Uniform Construction Code inspections inside Franklin Township

908-735-5215

[email protected]

Zoning

Franklin Township Zoning Officer

Zoning permits inside Franklin Township

(908) 735-5215

[email protected]

Septic permits

Hunterdon County Health Department, Office of Environmental Health

Septic design review, installation inspections and certification of completed systems in Hunterdon County

Contact details are copied from each office’s official page and were checked against it on October 24, 2026.

Off-grid gear

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

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Does Franklin Township, NJ have zoning?

Yes. Franklin Township divides its land into zones with its own Land Use Ordinance2, and the county does not zone: New Jersey counties have no zoning power7. The zone list includes AR-7.0 agricultural residential and RR-5.0 rural residential, plus commercial, village business and multifamily zones8. Franklin Township treats any use not specifically permitted in a zone as prohibited2.

That last rule matters for RVs, tiny homes and camping. We could not confirm whether any Franklin Township zone permits living in an RV, a tiny home or a manufactured home, so ask the Franklin Township Zoning Officer9 before you buy. Minimum dwelling size, lot coverage and height limits sit in the township's Schedule of Zone Requirements, which we could not confirm; district-by-district numbers are set by the township, not the state10.

Do you need a building permit in Franklin Township, and who issues it?

Yes. Franklin Township does not allow a building to be erected, constructed, structurally altered or moved until a building permit has been procured1. The township runs a state Uniform Construction Codes enforcing agency, so the Franklin Township Construction Department issues building permits and inspects the work5.

A separate zoning permit comes first for new construction, alteration, change of use or an accessory structure9. The zoning officer acts on a complete zoning permit application within 10 days or states in writing why it was refused11. New Jersey also bars a building permit until the local health board certifies the septic and water plans12.

How do septic permits work in Franklin Township?

Franklin Township requires a permit before anyone locates, constructs or alters an individual sewage disposal system3. New systems must sit within the building envelope of the lot3. Septic design review and installation inspections in Hunterdon County are done by the Office of Environmental Health13.

A new system cannot be used, and a home relying on it cannot be occupied, until the administrative authority certifies it was built to the permit14. Hunterdon County's soils are a real constraint: only 9.8% of soils are rated not limited for a conventional drain field, so expect a site evaluation and possibly an engineered system15. That figure is county-wide.

Can you live in an RV or tiny home on your land in Franklin Township?

We could not confirm it. Franklin Township's use tables, which would say whether an RV, tiny home or manufactured home is allowed as a dwelling, were not confirmed, and the ordinance prohibits uses not specifically permitted in a zone2. Do not assume an RV or tiny home is allowed. Statewide, HUD manufactured homes are limited to use group R-5, single-family dwellings16. Ask the Franklin Township Zoning Officer9 in writing before buying.

Building a home in Franklin Township: the steps, in order

  1. Ask the Zoning Officer which zone the parcel is in and what it allows9.
  2. Get septic design review and approval from Hunterdon County's Office of Environmental Health; New Jersey requires the health board's certification before a building permit issues12.
  3. Get a zoning permit, then a building permit from the Construction Department1.
  4. Have the septic system inspected before it is covered17.
  5. Pass the periodic Uniform Construction Code inspections18.
  6. Obtain a certificate of occupancy before moving in6. An owner who builds their own home must file an affidavit with the construction official before it is issued19.

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

Septic and well approvals stay with Hunterdon County's health officials4. Subdivisions get county planning review before local approval20. A driveway onto a State highway needs a State access permit21. Hunterdon County's effective property tax rate is 2%22. For land outside the township, see the Hunterdon County page.

A home sale inside the township needs a certificate of continued occupancy, with well-water tests and a visual check of the septic, electrical, plumbing and heating systems23.

Watch-outs

  • Owner-builder permit exemptions, driveway rules, floodplain rules and short-term rental rules for Franklin Township could not be confirmed; ask the Construction Department24 and Zoning Officer9.
  • New Jersey's owner-builder exception covers only builder registration, not permits or inspections25.
  • Franklin Township, Hunterdon County has namesakes elsewhere in New Jersey and Pennsylvania; confirm the page you use is for Hunterdon County9.

Sources

  1. Chapter 220 Land Use, Article VI General Zone Regulations (eCode360) (Franklin Township), quoted and re-checked
  2. Chapter 220 Land Use, Article II Zoning Districts (eCode360) (Franklin Township), quoted and re-checked
  3. Chapter 420 Sewage Disposal Systems, Individual (eCode360) (Franklin Township), quoted and re-checked
  4. Chapter 220 Land Use, Article VI General Zone Regulations (eCode360) (Franklin Township), quoted and re-checked
  5. Chapter 155 Construction Codes, Uniform (eCode360) (Franklin Township), quoted and re-checked
  6. Chapter 220 Land Use, Article VI General Zone Regulations (eCode360) (Franklin Township), quoted and re-checked
  7. P.L. 2013, c.106 — Municipal Land Use Law amendments (New Jersey statewide rule), quoted and re-checked
  8. Chapter 220 Land Use, Article II Zoning Districts (eCode360) (Franklin Township), quoted and re-checked
  9. Franklin Township Zoning Officer (franklin-twp.org)
  10. P.L. 2013, c.106 (Municipal Land Use Law amendments) (New Jersey statewide rule), quoted and re-checked
  11. Chapter 220 Land Use, Article VI General Zone Regulations (eCode360) (Franklin Township), quoted and re-checked
  12. New Jersey Statutes, R.S. 58:11-23 through 58:11-43 (New Jersey statewide rule), quoted and re-checked
  13. Septic Disposal Systems, quoted and re-checked
  14. Chapter 420 Sewage Disposal Systems, Individual (eCode360) (Franklin Township), quoted and re-checked
  15. 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
  16. Manufactured/Modular Buildings Program (New Jersey statewide rule), quoted and re-checked
  17. New Jersey Statutes, R.S. 58:11-23 through 58:11-43 (New Jersey statewide rule), quoted and re-checked
  18. New Jersey Department of Community Affairs, New Home Warranty—Consumer Information (New Jersey statewide rule), quoted and re-checked
  19. N.J.A.C. 5:23, Uniform Construction Code (New Jersey statewide rule), quoted and re-checked
  20. County Land Development Standards, quoted and re-checked
  21. Major Access Permits (New Jersey statewide rule), quoted and re-checked
  22. Effective property tax rate: Bolthole Index county data
  23. Chapter 220 Land Use, Article VI General Zone Regulations (eCode360) (Franklin Township), quoted and re-checked
  24. Franklin Township Construction Department (franklin-twp.org)
  25. Construction Code FAQs for New Home Buyers, quoted and re-checked

Written October 24, 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 Franklin Township

Franklin Township’s own rules

  • Building permitRequired

    Erection, construction, reconstruction, structural alteration or moving of buildings inside Franklin township

    • A separate zoning permit is required before a change in use, erection, construction, reconstruction, structural alteration or moving of a building (§ 220-27 a).
    • Building permit applications are filed under the township construction code (Chapter 155), administered by the enforcing agency.
    “no building or structure or part thereof shall be erected, constructed, reconstructed, structurally altered or moved until a building permit has been procured.”
  • Building code adoptedAdopted (with conditions)

    Construction in Franklin township, administered through the township's uniform construction codes enforcing agency

    • The township enforces the state Uniform Construction Code through its enforcing agency; the state code text itself was not opened.
    • Fire subcode and sprinkler fees are set in Chapter 182 (not opened).
    “there is hereby established in franklin township, hunterdon county, a state uniform construction codes enforcing agency”
  • InspectionsLimited

    Inspection for a certificate of continued occupancy on transfer of title, inside Franklin township

    • This limit applies to the certificate of continued occupancy on transfer of title; general construction inspection schedules were not found in the code section opened.
    • Well-water tests are also part of the CCO (see well_permit claim).
    “inspection for issuance of a certificate of continued occupancy for transfer of title shall be limited to only visual inspection by the construction code official and his/her subcode officials with respect to the individual sewage disposal system, electrical system, plumbing system, heating system and the presence of one functioning smoke detector on each level of any principal building being inspected.”
  • Certificate of occupancyRequired

    Land or buildings erected, altered or transferred inside Franklin township

    • A certificate of occupancy shall not be issued until the land, use, building, structure or premises complies with all provisions of the township chapter and all other applicable township and state requirements.
    • A zoning permit or a signed-off building permit must first exist before a CO or CCO is issued.
    • When a building permit is applied for, a CO is applied for at the same time and is to be issued within 10 days after completion of the work.

    CO issuance deadline after completion: 10 days (where a site plan approval applies, completion is not deemed until approved site plan requirements are met (§ 220-28 e))

    “no land or building hereafter erected, altered or the title to which is transferred shall be occupied or used in whole or part for any purpose until a certificate of occupancy (co) or a certificate of continued occupancy (cco) shall have been issued by the construction code official”
  • Local zoningPresent (with conditions)

    Land inside Franklin township's limits, Hunterdon County, NJ: the township's own Land Use Ordinance (Chapter 220 of the Township code) divides the township into zones

    • Zone-by-zone use and bulk limits are in Chapter 220 Article III (use regulations) and the Schedule of Zone Requirements (Attachment 1), which were not fully opened in this run.
    • Use not specifically permitted in a zoned district is prohibited (§ 220-30).
    “the township is hereby divided into the following zones, differentiated according to use, area and bulk requirements and designated as follows:”
  • Zoning districtsPublished (with conditions)

    Zoning districts of Franklin township inside its limits

    • Zone list is in § 220-6; the zoning map and Schedule of Zone Requirements (Attachment 1) were not opened.
    • Zones include AR-7.0, RR-5.0, C-N, C-S, NB, VB, MF and MXD overlay.
    “ar-7.0 agricultural residential (7 acres) rr-5.0 rural residential (5 acres) c-n commercial zone north (5 acres) c-s commercial zone south (7 acres) nb neighborhood business (2 acres) vb village business mf multifamily housing zone mxd mixed-use development overlay zone”
  • Accessory dwellingsLimited

    Accessory apartments on residential lots in Franklin township

    • Accessory apartment is a self-contained unit created by converting an existing single-family detached dwelling into two units, or converting another existing structure on a residential property.
    • The unit must have complete kitchen and bath facilities, direct outdoor access (or to a hall with outdoor access) and be physically subordinate to the primary unit.
    • Zone-by-zone permission for accessory apartments was not confirmed in the use tables.

    accessory apartments per lot: <= 1 unit

    “no more than one accessory apartment is permitted on a single lot.”
  • Septic permitRequired

    Locating, constructing or altering an individual sewage disposal system inside Franklin township

    • A permit is valid for three years from its date of issue (§ 420-7).
    • New systems must be located within the building envelope of the lot served (§ 420-6).

    permit validity: 3 years

    “no person shall locate, construct or alter any individual sewage disposal system until a permit for the location, construction, alteration or repairs of said sewage disposal system shall have been issued by the administrative authority as defined in n.j.a.c. 7:9a-2.1.”
  • Septic inspectionRequired

    New individual subsurface sewage disposal systems in Franklin township

    • Sewage disposal system must be certified before it is placed in operation or relied on for an occupied dwelling (§ 420-6).
    • Certificate issues only after the administrative authority confirms construction matches the permit; the inspection procedure itself was not opened.
    “new individual subsurface sewage disposal systems shall not be placed in operation, nor shall any dwellings or buildings or additions thereto be sold or occupied, which shall rely on such a system for sewage disposal until the administrative authority shall have issued a certificate indicating that the subsurface sewage disposal system has been located and constructed in compliance with the terms of the permit issued”
  • Subdividing landRegulated (with conditions)

    Subdivision of land inside Franklin township

    • Subdivision procedures are in Chapter 310 (Subdivision of Land and Site Plan Review); Chapter 310 was not opened.
    “chapter 310 subdivision of land and site plan review”
  • Permit processPartial

    Zoning permit and certificate of occupancy process in Franklin township

    • The zoning officer acts on a complete zoning permit application within 10 days or gives written refusal reasons (§ 220-27 g).
    • Building permit intake, plan review and inspection steps under Chapter 155 were not opened in full.

    zoning permit decision deadline: 10 days (from receipt of a completed application)

    “the zoning officer shall act upon all applications for zoning permits within 10 days of receipt of a completed application, or shall notify the applicant, in writing, of his refusal to issue such permit and the reasons therefor.”

Rules another office applies inside Franklin Township

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

  • Well permitRequired

    New private wells serving dwellings in Franklin township, approved by the Hunterdon County Department of Health

    • The well approval is by the Hunterdon County Department of Health, as stated in Chapter 220 § 220-28; the well permit procedure itself was not opened.
    • Well-water tests (pH, coliform, manganese, iron, nitrates) apply to the continued-occupancy inspection on transfer of title.
    “the tests required for a certificate of continued occupancy are the same tests required on a new well to obtain approval from the hunterdon county department of health.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Franklin Township or Hunterdon County directly.

  • Owner-builder exemption — Owner-builder permit exemption for a home in Franklin township
  • Minimum dwelling size — Minimum dwelling size in Franklin township
  • Lot coverage — Building lot coverage limits in Franklin township
  • Building height — Maximum building height in Franklin township
  • Living in an RV — Occupancy of recreational vehicles on private land in Franklin township
9 more unanswered
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Off-grid sanitation
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • 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 Franklin Township publishes no rule on the point, not that none exists. Hunterdon County’s page lists the county offices to call.

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