Bolthole Index

St. Tammany Parish, Louisiana

Zoning, building permits and septic rules in Mandeville, Louisiana

Mandeville is a city in St. Tammany Parish, Louisiana. Mandeville adopts its own zoning, so inside its limits Mandeville’s rules apply, not the county’s. 10 rules below are quoted from official sources and independently re-checked, most recently on November 12, 2026. Rules for unincorporated land are on the St. Tammany Parish page.

Answers from the rulebook for Mandeville

Mandeville’s own rules

  • Building code adoptedAdopted

    Building construction inside Mandeville city

    • Codes are those mandated by the Louisiana State Uniform Construction Code Council
    • Additional high-rise standards apply to buildings over 35 feet
    “This Article adopts and incorporates by reference into these regulations the building codes and parts thereof as mandated for enforcement by the Louisiana State Uniform Construction Code Council.”
  • Local zoningPresent

    All land inside Mandeville city limits

    • Exception for legally non-conforming building sites
    “No structure or land shall hereafter be used and no structure or part thereof shall be erected, reconstructed, converted, moved, or structurally altered unless in conformity with the regulations as set forth in this ordinance, except in the case of legally non-conforming building sites as provided in this article.”
  • Zoning districtsPublished

    Zoning districts inside Mandeville city (including R-1 and R-1X)

    • R-1X minimum lot area and width are noted on the Official Zoning District map
    “The R-1 Single-Family Residential Zoning District shall be for the purpose of providing low-density residential neighborhoods”
  • Minimum dwelling sizeSpecified

    R-1 Single-Family Residential District, Mandeville city

    • Planning Director may grant exceptions pursuant to section 4.3.5

    minimum building area: >= 1200 sq ft per unit

    “2. Minimum building area (Square feet per unit) 1,200 Square feet”
  • Minimum lot sizeSpecified

    R-1 Single-Family Residential District, Mandeville city

    • Legal non-conforming lots excepted
    • Minimum lot width 90 ft and depth 120 ft
    • Planning Director may grant exceptions

    minimum lot area: >= 10800 sq ft (legal non-conforming lots)

    “1. Minimum lot area 10,800 Square feet (except for legal non-conforming lots as provided)”
  • SetbacksSpecified

    R-1 Single-Family Residential District, Mandeville city

    • Interior side yard varies with frontage (8 ft each side up to 50 ft frontage, to 20 ft each side for 111 ft+)
    • Side yard setbacks may be shifted up to 30 percent into the opposite side yard
    • Planning Director may grant exceptions

    front yard: >= 25 ft · street side yard: >= 15 ft · rear yard: >= 30 ft

    “5. Minimum Yard Setback Requirements a. Front yard 25'”
  • Lot coverageSpecified

    R-1 Single-Family Residential District, Mandeville city

    • Maximum impervious site coverage; R-1X district allows 50%

    maximum impervious site coverage: <= 45 percent

    “6. Maximum Height of Structures 35' 7. Maximum Impervious Site Coverage 45%”
  • Building heightSpecified

    R-1 Single-Family Residential District, Mandeville city

    • Buildings over 35 feet must also meet high-rise standards of adopted codes (CLURO 5.2.1.1)

    maximum height of structures: <= 35 ft

    “6. Maximum Height of Structures 35' 7. Maximum Impervious Site Coverage 45%”
  • Camping on your landLimited

    Camping inside Mandeville city; the ordinance bans it on public property

    • Does not apply to vessels registered to moor on City facilities
    • Private-property camping not addressed in the section found
    “This section shall not apply to vessels registered to moor on City of Mandeville facilities.”
  • Building in a floodplainRequired

    Development in flood hazard areas inside Mandeville city

    • Flood damage prevention regulations apply to areas of special flood hazard
    • Specific permit and elevation requirements are in later subsections of CLURO 8.3 not captured here
    “Require that uses vulnerable to floods, including facilities which serve such uses, be protected against flood damage at the time of initial construction;”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Mandeville or St. Tammany Parish directly.

  • Building permit — Building permits inside Mandeville city
  • Owner-builder exemption — Owner-builder exemption inside Mandeville city
  • Inspections — Building inspections inside Mandeville city
  • Certificate of occupancy — Certificates of occupancy inside Mandeville city
  • Living in an RV — RV occupancy on private land inside Mandeville city
16 more unanswered
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Shed and accessory-building permit exemption
  • Subdividing land
  • Driveway access
  • Short-term rentals
  • Permit fees
  • 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 Mandeville publishes no rule on the point, not that none exists. St. Tammany Parish’s page lists the county offices to call.

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