Building permits for unincorporated St. Tammany Parish — the fast-growing north shore of Lake Pontchartrain — are issued by the Department of Permits, enforcing the statewide LSUCC. Cities (Slidell, Covington, Mandeville) permit separately.
This guide covers what requires a permit, the Parish's online permitting system, fees, trade permits, and inspections — so your St. Tammany Parish project stays on track.
St. Tammany Parish issues permits for unincorporated areas; incorporated cities (Slidell, Covington, Mandeville) handle their own. The parish has heavy residential growth plus extensive FEMA flood zones near the lake and Pearl River basin — elevation certificates and base-flood-elevation compliance are common. Verify flood-zone status and jurisdiction before applying.
Louisiana enforces a mandatory statewide building code — the Louisiana State Uniform Construction Code (LSUCC). Adopted under R.S. 40:1730.21 et seq. after Hurricane Katrina and administered by the Louisiana State Uniform Construction Code Council (LSUCCC) under the Office of State Fire Marshal (OSFM), the LSUCC adopts the 2021 I-Codes (IBC, IRC, IEBC, IPC, IMC, IFGC, IECC) with Louisiana amendments (effective Jan 1, 2023; 2024 editions under review) plus the National Electrical Code. Critically, no parish or municipality may adopt codes more or less stringent than the LSUCC — local jurisdictions administer permitting and inspections but enforce one consistent statewide code. Where a parish or municipality does not provide commercial plan review, the OSFM performs it.
What requires a building permit in St. Tammany Parish?
Under locally adopted codes, a permit is required for most construction activities:
Permit required
- New residential and commercial construction, additions, conversions
- Structural and load-bearing alterations
- Reroofing, windows, siding, and exterior modifications
- Electrical service changes and most wiring work
- HVAC installations, changeouts, and ductwork
- Plumbing alterations, repipes, water heaters
- Decks, porches, fences, patios, pools, garages
- Change of occupancy or use, sign installation
Typically exempt
- Painting, wallpapering, tiling, carpeting, cabinet installation
- Countertop replacement and similar finish work
- Minor repairs replacing existing materials in kind
- Small one-story detached accessory structures below the local size threshold (verify locally)
Exemptions are narrow and scope-specific. When unsure, confirm with the building department before starting — see the penalty note below.
Get the permit issued before starting work. Building without a permit in unincorporated St. Tammany Parish can result in fines, stop-work orders, and mandatory removal of unpermitted work.
Who handles permitting in St. Tammany Parish?
The Department of Permits (Planning & Development) handles plan review, permit issuance, and construction inspections. Permits are managed through the Parish's online permitting system.
| Detail | Information |
|---|---|
| Office | Department of Permits (Planning & Development), St. Tammany Parish, LA |
| Apply | St. Tammany online permitting (stpgov.org) |
| Scope | Unincorporated St. Tammany Parish |
| Flood | Elevation certificates & BFE compliance common |
| Code | LSUCC — statewide 2021 I-Codes |
| Contractor license | LSLBC license required |
Confirm unincorporated status, then apply online. Submit your application and plans with flood/elevation documentation, respond to plan-review comments, pay fees on approval, and post the permit on-site.
St. Tammany Parish building permit cost
St. Tammany Parish permit fees are typically valuation-based per the local fee schedule. Trade permits are billed separately.
| Fee component | How it works |
|---|---|
| Residential building permit | Valuation-based per the local fee schedule |
| Commercial building permit | Valuation-based — varies by scope, occupancy, and area |
| Plan review | Calculated per the adopted fee schedule |
| Trade permits (E / P / M) | Separate fees per trade |
| Re-inspections / revisions | Additional fees may apply |
| Work-without-permit | Penalties, stop-work orders, and possible removal of unpermitted work |
Want a precise number for a specific St. Tammany Parish project? Send us the scope and valuation and we'll return a fee estimate alongside a filing timeline.
St. Tammany Parish trade permits
Electrical, plumbing, and mechanical work each needs its own permit and appropriately licensed tradespeople.
Electrical permits
Required for service installations, panel upgrades, solar PV, EV chargers, and most wiring alterations — performed by a contractor licensed by the LSLBC (Electrical classification). Louisiana enforces the National Electrical Code statewide through the LSUCC; commercial electrical subcontracts over $10,000 require a license.
Plumbing & gas permits
Required for new plumbing, repipes, water-heater changeouts, fixtures, backflow, and gas/sewer connections — performed by a contractor licensed through the Louisiana State Plumbing Board and, for commercial work, the LSLBC (Plumbing classification).
Mechanical (HVAC) permits
Required for HVAC installations, changeouts, ductwork, and venting — performed by a contractor licensed by the LSLBC (Mechanical classification). Commercial mechanical subcontracts over $10,000 require a license.
Miscellaneous & specialty
Fencing, pools, decks, sheds, and patio covers may require special permits depending on size and utility hookups. Demolition, sign, and right-of-way permits follow separate tracks.
Verify contractor licensing. Louisiana consolidates contractor licensing under a single agency, the Louisiana State Licensing Board for Contractors (LSLBC). A commercial license is required for projects $50,000+ (classified Building, Electrical, Mechanical, Plumbing, Specialty); a residential license for new 1–4 family dwellings over $75,000; and a Home Improvement Contractor (HIC) registration for residential remodeling between $7,500 and $74,999. Electrical, mechanical, and plumbing subcontractors need a license when their commercial work exceeds $10,000. Under Act 422 (effective Aug 1, 2025), all roofing work now requires a separate LSLBC roofing license regardless of project value. Plumbers are also licensed by the Louisiana State Plumbing Board. Verify licenses at lslbc.gov.
How to get a building permit in St. Tammany Parish
Verify property is in unincorporated St. Tammany Parish
Confirm your parcel is in unincorporated St. Tammany Parish — not inside an incorporated city or town. Use the St. Tammany Parish GIS/parcel viewer to confirm jurisdiction. Contact the Department of Permits (Planning & Development) (see stpgov.org) with questions.
Confirm permit requirement & zoning
Confirm the correct permit type, zoning/subdivision rules, and whether your project requires a permit. Verify any flood-zone (FEMA SFHA) and coastal/wind requirements before applying.
Prepare your application package
Assemble the permit application, plat/site plan, construction drawings (sealed by a Louisiana-licensed design professional where required), scope and valuation, LSLBC contractor license, and proof of insurance.
Submit application & plans
Submit through the Parish's online permitting system. Select the correct permit type and upload required documents. Where the parish doesn't provide commercial plan review, the State Fire Marshal performs it.
Plan review & corrections
Staff reviews against the LSUCC. Typical review: varies by scope; flood-elevation review common. Address any correction notices promptly.
Schedule inspections & receive CO
Pay fees, receive the permit, and post it on-site. Schedule inspections through the Department of Permits (Planning & Development). Typical checkpoints: footing/foundation, framing, rough-in MEP, insulation, final. A Certificate of Occupancy is required before occupancy.
Inspections in St. Tammany Parish
Schedule inspections through the Department of Permits (Planning & Development). Standard checkpoints include footing/foundation, framing, rough-in MEP, insulation, and final. Post the permit on-site and keep approved plans available. A final inspection and Certificate of Occupancy are required before legal occupancy.
Address correction notices before requesting a re-inspection; a final inspection and Certificate of Occupancy are required before legal occupancy or use.
Official St. Tammany Parish permitting resources
- 🏛️ St. Tammany Permits
- 💻 St. Tammany Parish Government
- 🪪 LA State Licensing Board for Contractors
- 📜 LA Uniform Construction Code Council
- 🏛️ LA Office of State Fire Marshal
Simplify St. Tammany Parish permitting with Alliance Permitting
St. Tammany Parish’s the Parish's online permitting system, valuation-based fees, and Louisiana’s mandatory statewide code (LSUCC) reward applicants who prepare complete packages from the start. Alliance Permitting is a permit expediter for St. Tammany Parish — our permit expediting services pair AI-driven document review with experts who know the Department of Permits (Planning & Development) (St. Tammany Parish) process, so your St. Tammany Parish submissions move faster.
Trusted by leading builders and brands — including Dream Finders Homes, Tesla, Verizon, Hyatt, and Sunnova.
Contractors and builders choose Alliance for St. Tammany Parish because we deliver:
- Local expertise — we know Department of Permits (Planning & Development) (St. Tammany Parish), the Parish's online permitting system, and Louisiana’s statewide LSUCC and LSLBC requirements.
- Complete oversight — track every permit and inspection across all your jobs in one place.
- Error-free submissions — AI pre-checks plus expert review catch issues before they become correction cycles.
Alliance Permitting is a permit documentation and submission company: we prepare your paperwork, file it correctly, and coordinate with the building department through issuance — including preparing private-provider documentation where that option is available. We are not a contractor and do not perform licensed plan review or inspections; that work stays with your team and the jurisdiction.
Need a St. Tammany Parish building permit?
Get your St. Tammany Parish project permitted right. Alliance Permitting handles your applications through the Parish's online permitting system — so you build, not wait.
More Louisiana permitting guides
This guide is provided by Alliance Permitting for general informational purposes and reflects publicly available information believed accurate as of June 2026. Permit requirements, fees, and processes change; always confirm current details with the Department of Permits (Planning & Development) before filing. This is not legal advice.