Bolthole Index

Passaic County, New Jersey

Zoning, building permits and septic rules in West Milford Township, New Jersey

West Milford Township, Passaic County, New Jersey adopts and enforces its own zoning in Chapter 500 of the township code1. New homes need a Uniform Construction Code building permit from the township's building department23. Septic systems are permitted by the local health authority, here the Passaic County Health Department's West Milford office4. Living in an RV on a residential lot is prohibited5.

At a glance

Zoning
Township zoning under Chapter 500; rules vary by district1
Building permit
Required under the state Uniform Construction Code, issued locally2
Septic
Permit required before building; handled by the local health authority64
RV living on a lot
Prohibited in residential districts5
Minimum lot, R-4 (septic and well)
4 acres7
Accessory apartment
Allowed with conditions; 1-acre minimum lot8
Wells
State drilling permit required9

Who to call

Building permits

West Milford Township Building Department

Uniform Construction Code building permits and inspections for West Milford Township

973-728-2725

1480 Union Valley Road, West Milford, NJ 07480

Planning & zoning

West Milford Township Zoning Office

Zoning and code enforcement for West Milford Township

973-728-2759

1480 Union Valley Road, West Milford, NJ 07480

Health department

Passaic County Health Department, Environmental Health (West Milford office)

On-site sewage (septic) permits and environmental health services for West Milford Township

973-881-4772

13 Edgar Drive, West Milford, NJ 07480

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

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Does West Milford Township have zoning, and what does it mean for RVs and tiny homes?

Yes. West Milford Township adopts and administers its own zoning in Chapter 500 of the township code, and use and dimensional limits vary by district1. Passaic County does not zone: land-use power in New Jersey sits with the municipality10.

Living in a camper or RV is not an option on a residential lot. Camping vehicles, boats and trailers in West Milford's residential districts may not be used for temporary or permanent living quarters while situated on a lot5. The rule sits in the residential article, so we could not confirm how other zones treat it; ask the Zoning Office11.

A small second dwelling is possible in the single-family zones other than LR and PN through an accessory apartment. The lot must be at least 1 acre, and the apartment must be at least 300 square feet and no larger than 600 square feet or 30% of the existing dwelling, whichever is smaller8. A 2026 amendment to that article was not reviewed, so confirm the current text with the Zoning Office before relying on those figures8.

What are the lot size, setback and height rules in West Milford?

The numbers depend on the district and on whether a lot has public sewer and water. In the R-3 low density district on central sewer and central water, a detached house needs a lot of at least 25,000 square feet12, with a 50-foot front yard, 40-foot side yards and a 70-foot rear yard13.

In the R-4 very low density district, a lot with both its own septic system and its own well needs at least 4 acres7. Setbacks there are 125 feet in front, 60 feet on each side and 125 feet in back14.

Principal buildings in both districts can cover at most 10% of the lot1516. Residential buildings are capped at 35 feet and 2.5 stories, except houses on at least three acres, which may reach 40 feet17. Other residential districts have their own table entries, so ask the Zoning Office which district a specific lot is in11.

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

Yes. New Jersey's Uniform Construction Code makes it unlawful to construct, enlarge, alter or change the use of a structure without first filing for and obtaining a permit2, and the permit is administered by the local enforcing agency18. In West Milford Township that office is the Building Department at 1480 Union Valley Road, reachable at 973-728-27253.

The state sets a review clock: a decision on a complete permit application is due within 20 business days19. Inspections happen in stages during construction, and a new building needs a certificate of occupancy before use2021. We could not confirm the township's own construction-code procedures, fees or forms, so ask the Building Department3.

An owner may prepare plans for their own single-family home, and the sealed-plan requirement can be waived, but a permit and inspections are still required22.

How do septic permits work inside West Milford Township?

Septic is separate from the building permit. New Jersey bars issuing a building permit for a realty improvement that needs sewerage facilities until the septic or sewer approval is in place6. A septic system must also be inspected before it is covered23.

In West Milford the township directory lists the Passaic County Health Department's Environmental Health office at 13 Edgar Drive, phone 973-881-4772, as the local health contact4. Statewide standards apply and the local health authority permits the system24. Wells need a drilling permit from the state Department of Environmental Protection9.

Soils matter: across Passaic County only about 11.4% of soils rate as not limited for a conventional drain field, so expect a site evaluation and possibly an engineered system25.

Building a home in West Milford Township: the steps, in order

  1. Ask the Zoning Office which district the lot is in and what lot size, setbacks and coverage apply1126.
  2. If you are dividing land, the township regulates subdivision under Chapter 47027, and Passaic County's Planning Board also reviews subdivisions28.
  3. Get septic and well approvals: the local health authority for septic4 and the state for a well9.
  4. File for the building permit with the Building Department3.
  5. If the driveway meets a State highway, an access permit is required29.
  6. Pass the staged inspections and obtain the certificate of occupancy2021.

What to check before you buy land in West Milford, and what stays with Passaic County

Passaic County reviews subdivisions and development applications, but it does not set zoning for West Milford10. For the county's broader picture, see the Passaic County page.

County figures give context. Passaic County's effective property tax rate is 2.3%30, and about 85.2% of the county's land is wooded31. Wooded, sloped ground is common here, so walk the lot with a site evaluator before closing.

Also check district boundaries, wells and septic feasibility on the specific lot, and any recent zoning amendments with the Zoning Office11.

Watch-outs

  • We could not confirm West Milford Township's own construction-code procedures, fees or inspection forms; call the Building Department at 973-728-2725 before you plan a timeline3.
  • The township's accessory apartment rules were amended in 2026 and we could not confirm the current text; ask the Zoning Office before buying for a second dwelling8.
  • Lot size, setbacks and coverage differ by zoning district and by whether a lot has public sewer and water, so averages do not apply to any single parcel32.

Sources

  1. Article III: Residential Districts - Township of West Milford, NJ (West Milford Township), quoted and re-checked
  2. N.J.A.C. 5:23-2.14, Construction permits—when required (New Jersey statewide rule), quoted and re-checked
  3. West Milford Township Building Department (cit-e.net)
  4. Passaic County Health Department, Environmental Health (West Milford office) (cit-e.net)
  5. Article III: Residential Districts - Township of West Milford, NJ (West Milford Township), quoted and re-checked
  6. New Jersey Statutes, R.S. 58:11-23 through 58:11-43 (New Jersey statewide rule), quoted and re-checked
  7. Article III: Residential Districts - Township of West Milford, NJ (West Milford Township), quoted and re-checked
  8. Article III: Residential Districts - Township of West Milford, NJ (West Milford Township), quoted and re-checked
  9. Bulletin 88-10: Private On-Site Water Supply Systems (New Jersey statewide rule), quoted and re-checked
  10. Analysis of Impediments to Fair Housing Choice, quoted and re-checked
  11. West Milford Township Zoning Office (cit-e.net)
  12. Article III: Residential Districts - Township of West Milford, NJ (West Milford Township), quoted and re-checked
  13. Article III: Residential Districts - Township of West Milford, NJ (West Milford Township), quoted and re-checked
  14. Article III: Residential Districts - Township of West Milford, NJ (West Milford Township), quoted and re-checked
  15. Article III: Residential Districts - Township of West Milford, NJ (West Milford Township), quoted and re-checked
  16. Article III: Residential Districts - Township of West Milford, NJ (West Milford Township), quoted and re-checked
  17. Article III: Residential Districts - Township of West Milford, NJ (West Milford Township), quoted and re-checked
  18. Bulletin 06-1: Work Done Without Permits, quoted and re-checked
  19. The New Jersey State Uniform Construction Code (New Jersey statewide rule), quoted and re-checked
  20. New Jersey Department of Community Affairs, New Home Warranty—Consumer Information (New Jersey statewide rule), quoted and re-checked
  21. N.J.A.C. 5:23, Uniform Construction Code (New Jersey statewide rule), quoted and re-checked
  22. N.J.A.C. 5:23-2.15A Construction permit for a single-family residence, quoted and re-checked
  23. New Jersey Statutes, R.S. 58:11-23 through 58:11-43 (New Jersey statewide rule), quoted and re-checked
  24. New Jersey Statutes, R.S. 58:11-23 through 58:11-43 (New Jersey statewide rule), quoted and re-checked
  25. 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
  26. Article III: Residential Districts - Township of West Milford, NJ (West Milford Township), quoted and re-checked
  27. Township of West Milford, NJ eCode360 table of contents (West Milford Township), quoted and re-checked
  28. Passaic County Subdivision Resolution, quoted and re-checked
  29. Major Access Permits (New Jersey statewide rule), quoted and re-checked
  30. Effective property tax rate: Bolthole Index county data
  31. Wooded share of land: Bolthole Index county data
  32. P.L. 2013, c.106 (Municipal Land Use Law amendments) (New Jersey statewide rule), 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 West Milford Township

West Milford Township’s own rules

  • Local zoningPresent (with conditions)

    Land inside West Milford township limits: the township adopts and administers its own zoning in Chapter 500 (Zoning) of its code

    • Zoning is administered by the township under Chapter 500; use and dimensional limits vary by district.
    • Table of contents lists chapter 500 zoning as part of Part III, land development legislation.
    “chapter 500 zoning (§ 500-1 – § 500-206)”
  • Zoning districtsPublished

    Residential zoning districts of West Milford township (Article III list); commercial, industrial and other districts are in other articles

    • Article I (zone districts and map) and Articles IV-VI were listed but not opened; their district lists are not verified here.
    “r-3 — low density single-family residential r-4 — very low density residential”
  • Minimum lot sizeSpecified

    Detached single-family dwelling in the R-3 low density single-family district on a lot served by central sewer and central water inside West Milford township

    • Applies only to properties serviced by central sewerage facilities and central water facilities, or within a wastewater management service area, as determined by the township zoning officer.
    • Frontage 140 ft and depth 175 ft minimums also apply in this table.

    principal building lot area: >= 25000 square feet (R-3 district, central sewer and water)

    “b. properties serviced by central sewerage facilities, central water facilities, properties located within a wastewater management service area or substantially similar facilities as determined by the township zoning officer. detached dwellings minimum requirements r-3 r-2 r-1 r-1/i principal building lot area (square feet) 25,000 20,000 15,000 15,000”
    One more reviewed finding on this topic
    • Specified — Detached single-family dwelling in the R-4 very low density residential district on a lot with both an individual septic system and an individual well inside West Milford township
      “a. properties with both individual septic system and individual well facilities or substantially similar facilities as determined by the township zoning officer. detached dwellings minimum requirements r-4 r-3 r-2 r-1 principal building lot area (acres) 4 3 2 1”
  • SetbacksSpecified

    Detached single-family dwelling in the R-3 low density single-family district on a lot served by central sewer and central water inside West Milford township

    • Accessory building minimum distances in this table (R-3, central): side line 15 ft, rear line 15 ft, other building 20 ft.

    front yard: >= 50 feet (R-3, central sewer and water) · side yard, each: >= 40 feet (R-3, central sewer and water) · rear yard: >= 70 feet (R-3, central sewer and water)

    “side yard, each (feet) 40 30 25 25 front yard (feet) 50 40 35 35 rear yard (feet) 70 60 45 45”
    One more reviewed finding on this topic
    • Specified — Detached single-family dwelling in the R-4 very low density residential district on a lot with both individual septic and individual well inside West Milford township
      “side yard, each (feet) 60 50 40 30 front yard (feet) 125 100 75 50 rear yard (feet) 125 100 75 50”
  • Lot coverageSpecified

    Principal building coverage in the R-3 low density single-family district on a lot served by central sewer and central water inside West Milford township

    • Accessory building footprint capped at 3,000 sq ft and accessory structures capped at 3% coverage in the central-service table.

    maximum principal building coverage: <= 10 percent (R-3, central sewer and water)

    “maximum building coverage principal building 10% 10% 10% 10%”
    One more reviewed finding on this topic
  • Building heightSpecified

    Principal buildings in all residential districts under Article III of the township zoning chapter inside West Milford township

    • Houses on a minimum of three acres may reach 40 feet.
    • Stated as 35 feet and 2 1/2 stories; the 40-foot exception is for houses on at least three acres.

    maximum building height: <= 35 feet (houses on a minimum of three acres may be up to 40 feet) · maximum stories: <= 2.5 stories

    “no building shall exceed 35 feet in height and 2 1/2 stories with the exception of houses constructed on a minimum of three acres, which shall not exceed 40 feet in height.”
  • Living in an RVProhibited

    Camping vehicles, boats and trailers parked on a lot in West Milford township's residential districts (Article III accessory uses)

    • Living use is prohibited while the camping vehicle is situated on a lot; the rule sits in the residential article, so it is not shown to reach commercial or other zones.
    • Parking or storage is directed to rear or side yards when possible.
    “they shall not be used for temporary or permanent living quarters while situated on a lot.”
  • Accessory dwellingsLimited

    Accessory apartments on single-family lots inside West Milford township's single-family zones (not LR or PN zones)

    • Minimum lot size of one acre.
    • Apartment must be at least 300 square feet; maximum is 30% of the existing dwelling or 600 square feet, whichever is smaller.
    • Owner must occupy the dwelling as primary residence; only one accessory apartment per single-family lot.
    • Occupancy caps by unit size apply (text not fully read).
    • Ordinance 2026-007 (adopted 2026-03-04) amended Article III; the amendment's effect on this section was not verified.

    minimum lot size: >= 1 acre (single-family zones except LR and PN) · minimum apartment size: >= 300 square feet · maximum apartment size: <= 600 square feet (or 30% of existing dwelling, whichever is smaller)

    “the minimum lot size in which an accessory apartment is permitted shall be one acre.”
  • Subdividing landRegulated (with conditions)

    Division of land inside West Milford township limits

    • Based on the code's chapter title 'Subdivision of Land and Site Plan Review' (Chapter 470); the substantive approval thresholds were not opened.
    • Lots created by subdivision may need approval before building permits.
    “chapter 470 subdivision of land and site plan review (§ 470-1 &ndash; § 470-104)”

Still unanswered

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

  • Building permit — New home construction inside West Milford township limits
  • Owner-builder exemption — Owner-builder construction of a home inside West Milford township limits
  • Inspections — Building inspections for new homes inside West Milford township limits
  • Certificate of occupancy — Certificate of occupancy for new homes inside West Milford township limits
  • Minimum dwelling size — Minimum floor area for a dwelling inside West Milford township limits
14 more unanswered
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • Building in a floodplain
  • Short-term rentals
  • Permit process

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 West Milford Township publishes no rule on the point, not that none exists. Passaic County’s page lists the county offices to call.

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