Bolthole Index

St. Tammany Parish, Louisiana

Building permits, zoning and septic in the Village of Folsom, Louisiana

New home construction in the Village of Folsom, Louisiana is subject to building permits under Louisiana’s construction-code enforcement framework; start with the village administration for the local application procedure.12 Folsom sets its own zoning, while individual sewer systems without central sewerage require parish health department approval.34 Folsom lies in St. Tammany Parish; parish-wide sewerage inspection questions go to Environmental Services.5

At a glance

Building permits
Required for construction covered by the state construction code; ask village administration for the local procedure12
Zoning
Village zoning with district-specific uses and dimensions36
Septic approval
Parish health department approval for individual sewer systems where central sewerage is unavailable; state permit requirements also apply47
Residential lot size
A-1: 2.5 acres, with qualifying older lots grandfathered; A-3: 7,200 square feet; A-4: 20,000 square feet per family8910
Manufactured homes
Pre-manufactured homes prohibited in A-411
Accessory dwelling
A-1 allows attached garage apartments or guest houses under 1,000 square feet of habitable floor space12
Private wells
A-1 wells without central water facilities must be 50 feet from sewer disposal units13

Who to call

Building permits

Village of Folsom Administrative Department

Local building application inquiries and referral to the village building inspector

(985) 796-5607

[email protected]

82378 June Street Folsom, LA 70437

Zoning

Village of Folsom Planning and Zoning Commission

Village development, subdivision and zoning questions

(985) 796-5607

[email protected]

82378 June Street Folsom, LA 70437

Septic permits

St. Tammany Parish Department of Environmental Services

Sewerage Inspection Permit applications and on-site wastewater inspections

985-898-2535

[email protected]

21454 Koop Drive, Building B Mandeville, LA 70471

Online permits →

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

Off-grid gear

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

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Do you need a building permit in the Village of Folsom, LA?

Louisiana requires local building-permit enforcement for new home construction, reconstruction, additions to homes previously built to the residential code, and extensive alterations.1 In Folsom, start with the Village Administrative Department, whose work includes permit processing and public inquiries.2 Ask for the building inspector’s application form, current building-permit fees, plan requirements and inspection schedule before arranging construction. We could not confirm a complete Folsom application procedure or fee schedule; the village administration is the contact for those questions.2

Who handles building applications and zoning in the Village of Folsom?

The Village of Folsom Administrative Department handles permit processing and public inquiries, and the Village Planning and Zoning Commission reviews proposed projects, subdivisions and zoning changes.214 Contact the village at (985) 796-5607 or [email protected], or visit 82378 June Street Folsom, LA 70437.2 For a parcel inside village limits, take the proposed house type and site layout to the village offices for the building and zoning questions.214 Individual sewer-system approval is a separate parish health matter, rather than a village zoning approval.4

Does the Village of Folsom have zoning, lot sizes and height limits?

The Village of Folsom has its own zoning chapter, with residential standards that differ by district.36 A-1 residential zoning lots must contain at least 2.5 acres; smaller existing lots qualify for grandfathering only if created before the amendment date.8 A-3 residential zoning lots require at least 7,200 square feet, while A-4 lots require at least 20,000 square feet per family.910 A-3 limits residential or business buildings to 35 feet above natural grade; A-4 limits buildings and structures to 35 feet above base flood elevation.1516 Ask village Planning and Zoning to confirm the parcel’s district and the setbacks for the proposed layout.14

How do septic permits work inside the Village of Folsom?

For Folsom lots without central sewerage, the village code requires individual sewer systems to meet state health standards and receive parish health department approval.4 Louisiana also requires a state health officer’s permit before installing, altering or operating an individual sewerage system, with approved plans and specifications.7 St. Tammany Parish Environmental Services handles on-site wastewater permit issuance and inspections; Sewerage Inspection Permit applications must be made online.5 Call Environmental Services at 985-898-2535 to establish how the parish inspection application fits with health approval for the address.5 Across St. Tammany Parish, only 1.2% of soils are rated not limited for conventional drain fields; that supports obtaining a site evaluation, not assuming septic is impossible.17

Can you live in an RV or tiny home in the Village of Folsom?

We could not confirm a general Folsom rule allowing private-land RV living, temporary camping or tiny-home occupancy; ask Village Planning and Zoning about the proposed use and district before buying a unit.14 Folsom’s A-4 district prohibits pre-manufactured homes, so a manufactured-home proposal needs a district-specific answer.11 In A-1, an attached garage apartment or guest house is permitted only under 1,000 square feet of habitable floor space.12 That attached accessory-dwelling provision does not establish permission for a detached tiny home or an occupied RV.12

Building a home in the Village of Folsom: what should you check first?

Start with Village Planning and Zoning to identify the parcel’s district and discuss the intended residence, subdivision and site layout.14 Next, ask village administration for the building application procedure and inspection contact for construction covered by Louisiana’s code.21 Resolve sewerage approval before committing to a house footprint: individual systems without central sewerage require parish health approval.4 In A-1 without central water, reserve at least 50 feet between a well and any sewer disposal unit.13 Louisiana requires licensed well drillers and registration within 30 days after completion; domestic wells follow post-installation notification rules rather than the ordinary advance-notification period.18 For land outside village limits, use the St. Tammany Parish guide: the parish building-permit requirement cited there applies to unincorporated land.19

Watch-outs

  • Folsom’s A-1 grandfathering applies to qualifying older undersized lots; do not assume every small A-1 parcel meets the residential lot-area rule.8
  • We could not confirm a Folsom owner-builder waiver or minimum dwelling floor area; ask village administration about building requirements and Village Planning and Zoning about the proposed dwelling.214
  • Parish Environmental Services inspection administration and the village code’s parish health approval are separate pieces of the sewerage question; confirm the required approvals for the address.54

Sources

  1. Louisiana Revised Statutes 40:1730.23 — Enforcement of building codes by municipalities and parishes (Louisiana statewide rule), quoted and re-checked
  2. Village of Folsom Administrative Department (villageoffolsom.com)
  3. Code of Ordinances: Chapter 40, Sec. 40-116. A-1 Suburban Residential District (Village of Folsom), quoted and re-checked
  4. Code of Ordinances: Chapter 40, Sec. 40-116. A-1 Suburban Residential District (Village of Folsom), quoted and re-checked
  5. St. Tammany Parish Department of Environmental Services (stpgov.org)
  6. Code of Ordinances: Chapter 40, Sec. 40-116. A-1 Suburban Residential District (Village of Folsom), quoted and re-checked
  7. Louisiana Administrative Code Title 51, Part XIII, Public Health—Sanitary Code (Louisiana statewide rule), quoted and re-checked
  8. Code of Ordinances: Chapter 40, Sec. 40-116. A-1 Suburban Residential District (Village of Folsom), quoted and re-checked
  9. Code of Ordinances: Chapter 40, Sec. 40-118. A-3 Single-Family Residential District (Village of Folsom), quoted and re-checked
  10. Code of Ordinances: Chapter 40, Sec. 40-119. A-4 Single-Family Planned Residential District (Village of Folsom), quoted and re-checked
  11. Code of Ordinances: Chapter 40, Sec. 40-119. A-4 Single-Family Planned Residential District (Village of Folsom), quoted and re-checked
  12. Code of Ordinances: Chapter 40, Sec. 40-116. A-1 Suburban Residential District (Village of Folsom), quoted and re-checked
  13. Code of Ordinances: Chapter 40, Sec. 40-116. A-1 Suburban Residential District (Village of Folsom), quoted and re-checked
  14. Village of Folsom Planning and Zoning Commission (villageoffolsom.com)
  15. Code of Ordinances: Chapter 40, Sec. 40-118. A-3 Single-Family Residential District (Village of Folsom), quoted and re-checked
  16. Code of Ordinances: Chapter 40, Sec. 40-119. A-4 Single-Family Planned Residential District (Village of Folsom), quoted and re-checked
  17. 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
  18. Louisiana Administrative Code, Title 43, Part VI, §701 (Louisiana statewide rule), quoted and re-checked
  19. St. Tammany Parish Unified Development Code, quoted and re-checked

Written October 11, 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 Village of Folsom

Village of Folsom’s own rules

  • Local zoningPresent

    Land inside Folsom village limits.

    • Chapter 40 is the village zoning chapter; district-specific rules and approvals apply.
    “The A-1 Suburban Residential District is intended to provide a single-family residential environment on large, multi-acre lots.”
  • Zoning districtsPublished

    Zoning districts inside Folsom village limits, including A-1, A-3, A-4, and A-5 residential districts.

    • The reviewed official code sections provide district purposes, permitted and conditional uses, dimensional standards, utilities, and height rules.
    “The A-1 Suburban Residential District is intended to provide a single-family residential environment on large, multi-acre lots.”
  • Minimum lot sizeSpecified

    Residential zoning lots in the A-1 Suburban Residential District inside Folsom village.

    • Existing A-1 lots smaller than 2.5 acres are grandfathered as nonconforming lots if created before the amendment date.

    minimum residential lot area: >= 2.5 acres (Existing lots smaller than 2.5 acres may be grandfathered if created before the amendment date.)

    “Residential uses. The lot area of each zoning lot shall not be less than 2.5 acres. Note: Existing lots in A-1 that are less than 2.5 acres will be grandfathered as nonconforming lots, if such lots were created before the date of this amendment.”
    2 more reviewed findings on this topic
  • Building heightSpecified

    Buildings and structures in the A-4 Single-Family Planned Residential District inside Folsom village.

    • The stated reference is the base flood elevation established in current FEMA maps and guidelines.

    maximum height: <= 35 feet above base flood elevation

    “No building or structure shall exceed 35 feet above the base flood elevation as established in the current FEMA maps and guidelines.”
    2 more reviewed findings on this topic
  • Manufactured homesProhibited

    Pre-manufactured homes in the A-4 Single-Family Planned Residential District inside Folsom village.

    • The prohibition is district-specific; floodplain rules separately regulate manufactured homes in designated flood zones.
    “Prohibited uses. All uses not specifically permitted or by reasonable implication permitted herein, including, but not limited to, the following: (1) Commercial uses. (2) Industrial uses. (3) Pre-manufactured homes.”
  • Accessory dwellingsLimited

    Attached garage apartments or guest houses in the A-1 Suburban Residential District inside Folsom village.

    • The attached garage apartment or guest house must be under 1,000 square feet of habitable floor space.

    maximum habitable floor space: < 1000 square feet

    “Attached garage apartment or guest house under 1,000 square feet of habitable floor space.”
  • Off-grid sanitationLimited

    Lots in A-1 and A-3 districts without central sewerage facilities inside Folsom village.

    • An individual sewer system is allowed where central sewerage is unavailable only if it meets department of health and human resources standards and is approved by the parish health department.
    “On lots without central sewerage facilities, an individual sewer system must meet department of health and human resources standards and be approved by the parish health department.”
  • Mandatory utility hookupConditional

    Residential and nonresidential lots in the A-1 Suburban Residential District inside Folsom village.

    • On lots without central sewerage facilities, an individual sewer system must meet state health standards and receive parish health department approval.
    • On lots without central water facilities, a well must be 50 feet from any sewer disposal unit.

    well-to-sewer-disposal separation: >= 50 feet

    “Water. On lots without central water facilities, any well must be 50 feet from any sewer disposal unit.”

Rules another office applies inside Village of Folsom

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

  • Who permits septicCounty (with conditions)

    Individual sewer systems on lots inside Folsom village without central sewerage facilities.

    • The village code requires compliance with department of health and human resources standards and approval by the parish health department.
    “On lots without central sewerage facilities, an individual sewer system must meet department of health and human resources standards and be approved by the parish health department.”

Still unanswered

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

  • Building permit — Building permits for construction inside Folsom village limits.
  • Owner-builder exemption — Owner-builder work inside Folsom village limits.
  • Inspections — Building inspections inside Folsom village limits.
  • Certificate of occupancy — Certificates of occupancy for buildings inside Folsom village limits.
  • Minimum dwelling size — Residential dwellings inside Folsom village limits.
11 more unanswered
  • Lot coverage
  • Camping on your land
  • Tiny homes
  • Septic permit
  • Septic inspection
  • Well permit
  • Agricultural exemption
  • 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 Village of Folsom 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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