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

Borough of Mountain Lakes’s own rules

• Building permitRequired

  Erection, movement, extension, enlargement, alteration, or demolition of a building or structure inside Mountain Lakes borough.

  • A construction permit is conditional until a foundation survey is made when the foundation is in place.
  • The survey must be sealed by a licensed surveyor and show foundation dimensions, property-line distances, and top-of-foundation elevation.
  • The Construction Official may waive the survey if satisfied that the foundation meets setback requirements.

  “No building, structure or part thereof shall be erected, raised, moved, extended, enlarged, altered or demolished until a permit has been granted by the Construction Official. A construction permit shall be conditional until a foundation survey is made at the time the foundation is in place.”

• Certificate of occupancyRequired

  Occupancy or use of land or a structure inside Mountain Lakes borough, including changes of use.

  • A new certificate of occupancy is required for a change of use of land or structure.
  • The certificate must state that the specified use and building comply with the applicable chapters.

  “No land or structure shall be occupied or used in whole or in part for any purpose until a certificate of occupancy shall have been issued by the Construction Official stating that the use and building therein specified, or either of them as the case may be, complies with all the provisions of these chapters. A new certificate of occupancy shall be required for a change of use of land or structure.”

• Local zoningPresent

  Land inside Mountain Lakes borough; the Borough adopts and administers its own Land Use and Zoning Ordinance.

  • The ordinance is administered by the Borough Planning Board and enforced by the Construction Official, Code Enforcement Official, Zoning Officer, or another officer designated by the Borough Manager.

  “This chapter shall be known and may be cited as the "Land Use and Zoning Ordinance" of the Borough of Mountain Lakes.”

• Accessory dwellingsAllowed (with conditions)

  Affordable accessory apartments in residential zones inside Mountain Lakes borough.

  • Affordable accessory apartments are listed as permitted accessory uses in the residential zones.
  • The use remains subject to Article XVIII and applicable zoning, building, water, sewer, parking, and affordability requirements.

  “Affordable accessory apartments in accordance with Article XVIII of this chapter.”

• Who permits septicLocal

  Individual sewage-disposal systems inside Mountain Lakes borough; the Borough Board of Health is the permitting authority.

  • The municipal code adopts NJDEP standards and preserves additional requirements of the Borough Health Officer, Board of Health, or another regulatory body with jurisdiction.

  “No person shall locate, construct or alter any individual sewage disposal system until a permit for the location, construction or alteration of a sewage disposal system shall have been issued by the Board of Health.”

• Septic inspectionRequired

  Individual sewage-disposal facilities inside Mountain Lakes borough.

  • The Health Officer may inspect at any stage.
  • The applicant must notify the Health Officer when ready for final inspection and before underground portions are covered.
  • The inspection is to be made within 48 hours, excluding Saturdays, Sundays, and legal holidays, after notice.

  inspection deadline: <= 48 hours (Saturdays, Sundays, and legal holidays excluded)

  “A permit for an individual sewage disposal facility shall not become effective until the installation is completed to the satisfaction of the Health Officer. He shall be allowed to inspect the work at any stage of construction, and, in any event, the applicant for the permit shall notify the Health Officer, or such other person designated by the Manager, when the work is ready for final inspection and before any underground portions are covered. The inspection shall be made within 48 hours, excluding Saturdays, Sundays and legal holidays, of the receipt of such notice by the Health Officer.”

• Off-grid sanitationLimited

  On-site sanitation inside Mountain Lakes borough where public or private sewer is unavailable.

  • The property must use a septic tank or other individual sewage-disposal facility complying with the municipal chapter and applicable health codes.
  • An individual-system permit and inspection are required.
  • Direct connection to a public sewer is required when one becomes available.

  “Where a public or private sewer system is not available under the provision of Subsection B, the house service connection shall be connected to a septic tank or other individual sewage disposal facility complying with the provisions of this section.”

• Subdividing landRegulated (with conditions)

  Subdivision and site-plan development inside Mountain Lakes borough.

  • All necessary permits and approvals must be obtained before a construction permit may be issued and before construction may commence.
  • Site-plan review has exceptions for a single-family home and a municipal capital improvement project.
  • A change to an approved site plan requires Planning Board or Zoning Board of Adjustment approval and a new certificate of occupancy.

  “The purpose of this article shall be to provide rules, regulations and standards to guide land subdivision and site development in the Borough.”

• Permit processPartial

  Development and construction-permit processing inside Mountain Lakes borough.

  • A zoning permit is required before covered construction, reconstruction, demolition, alteration, conversion, installation, commencement of use, or change of use.
  • A zoning permit certifying conformity is required before issuance of a building permit.
  • All necessary permits and approvals must be obtained before construction may commence.

  “Prior to the issuance of a building permit, a zoning permit certifying that the request conforms with the provisions of this chapter shall be issued.”

Still unanswered

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

• Owner-builder exemption — Owner-builder exemptions from construction-permit requirements inside Mountain Lakes borough.
• Building code adopted — Building-code adoption for construction inside Mountain Lakes borough.
• Inspections — Building inspections inside Mountain Lakes borough.
• Minimum dwelling size — Minimum dwelling size in the principal single-family residential districts.
• Living in an RV — Residential occupancy of recreational vehicles inside Mountain Lakes borough.

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.

Off-grid gear

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

• Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
• Power Bluetti Solar generators and home battery backup for living off the grid.
• Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
• Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.

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