Building permits across Lafayette Parish are issued by Lafayette Consolidated Government (LCG) for the City of Lafayette and unincorporated parish, enforcing the statewide LSUCC. Its Development and Planning department handles permitting through the Permitting & Codes division at 220 West Willow Street, Building B, Lafayette ((337) 291-8461). Youngsville, Broussard, Scott, Carencro and Duson permit separately.
This guide covers what requires a permit, LCG’s My Government Online (MGO) portal, fees, trade permits, and inspections — so your Lafayette Parish project stays on track.
Lafayette Consolidated Government (LCG) merges the city and parish, issuing permits for the City of Lafayette and unincorporated Lafayette Parish through one department, Development and Planning. The incorporated cities and towns of Youngsville, Broussard, Scott, Carencro and Duson handle their own permitting. Verify flood-zone status before applying: the current FEMA flood maps for the parish took effect on 21 December 2018, and LCG issues a floodplain development permit alongside the building permit where the parcel is in a flood zone.
Louisiana enforces a mandatory statewide building code — the Louisiana State Uniform Construction Code (LSUCC). Adopted after Hurricane Katrina, the code law was re-enacted by Act 881 of 2026 as R.S. 37:3727 et seq., and the code is now overseen by the Louisiana Uniform Construction Code Commission (LUCCC) in the governor’s office, which replaced the former LSUCC Council. The code in force is the 2021 I-Codes (IBC, IRC, IEBC, IPC, IMC, IFGC) with Louisiana amendments, effective 1 January 2023, with the 2021 IECC from 1 July 2023 and the 2020 National Electrical Code; the 2024 I-Codes and the 2023 NEC take effect on 1 January 2027. Parishes and municipalities enforce only the statewide code (R.S. 37:3737) — local jurisdictions administer permitting and inspections. LCG performs its own building-code plan review; the State Fire Marshal separately reviews plans for life safety on buildings other than one- and two-family dwellings (R.S. 40:1574).
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Get a free quote →What requires a building permit in Lafayette 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
- A detached residential playhouse or shed of up to 200 sq ft on a movable foundation (piers or skids); on commercial sites a one-story shed of up to 120 sq ft on a movable foundation, fences up to 7 ft and retaining walls up to 4 ft
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 Lafayette Parish can result in fines, stop-work orders, and mandatory removal of unpermitted work.
Who handles permitting in Lafayette Parish?
LCG’s Development and Planning department, through its Permitting & Codes division, handles plan review, permit issuance and construction inspections for the City of Lafayette and unincorporated Lafayette Parish. Applications are made and managed in the My Government Online (MGO Connect) customer portal. For commercial permitting questions LCG names its Permit Manager ((337) 291-8491) and Chief Building Inspector ((337) 291-8485).
Not sure this scope needs a permit?
Get a free quote →| Detail | Information |
|---|---|
| Office | LCG Development and Planning department, Permitting & Codes division, 220 West Willow Street, Building B, Lafayette, LA 70501 |
| Phone | (337) 291-8461 |
| Apply | My Government Online (MGO Connect) customer portal |
| Scope | City of Lafayette + unincorporated parish |
| Code | LSUCC — statewide 2021 I-Codes |
| Contractor license | LSLBC license required |
Apply through the MGO portal. Submit your application and plans, clear zoning/drainage where required, respond to plan-review comments, pay fees on approval, and post the permit on-site before work begins.
Lafayette Parish building permit cost
LCG building permit fees are based on the fair market value of the improvement, plus a plan review fee. Electrical, plumbing and mechanical permits have their own fee schedules.
| Fee component | How it works |
|---|---|
| Residential building permit | $3.50 per $1,000 of fair market value of the improvement ($35 minimum) |
| Commercial building permit | $5.00 per $1,000 of fair market value of the improvement ($100 minimum) |
| Plan review | $50 on residential permits; $10 a sheet ($100 minimum) on commercial permits |
| 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 Lafayette Parish project? Send us the scope and valuation and we'll return a fee estimate alongside a filing timeline.
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Call 1-855-478-4290 →Lafayette 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 uniform code; electrical work of $10,000 or more needs an LSLBC licence.
Plumbing & gas permits
Required for new plumbing, repipes, water-heater changeouts, fixtures, backflow, and gas/sewer connections — performed by a plumber licensed through the State Plumbing Board of Louisiana (whose duties move to the LSLBC on 1 January 2027 under Act 908 of 2026) and, for plumbing work of $10,000 or more, a contractor holding 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). Mechanical work of $10,000 or more needs an LSLBC licence.
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.
Rather not deal with the Lafayette Parish building department?
Get a free quote →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 a new residential structure of $50,000 or more; and a Home Improvement license for residential improvement or repair work from $7,500 up to $50,000. Electrical, mechanical and plumbing work of $10,000 or more needs a licence in that classification (R.S. 37:2150.1). Since 1 January 2026, residential roofing work of $7,500 or more needs the Residential Roofing or Residential Construction classification (R.S. 37:2156.4, from Act 422 of 2025). Plumbers are also licensed by the State Plumbing Board of Louisiana until its duties move to the LSLBC on 1 January 2027. Verify licenses at lslbc.gov.
How to get a building permit in Lafayette Parish
Confirm permit requirement & zoning
Contact LCG’s Permitting & Codes division ((337) 291-8461). Confirm zoning compliance, identify the correct permit type, and confirm whether your project requires a permit. Verify any flood-zone (FEMA SFHA) and coastal/wind requirements before applying. LCG permits the City of Lafayette and unincorporated Lafayette Parish; for property in Youngsville, Broussard, Scott, Carencro or Duson, confirm that municipality's permitting office.
Prepare your application package
Assemble the permit application, 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 MGO customer portal (also available as the MGO Connect app). Select the correct permit type and upload required documents.
Plan review & corrections
Staff reviews against the LSUCC. Typical review: varies by scope and occupancy. Address any correction notices promptly.
Pay fees & receive permit
Pay permit fees upon approval. Print the permit and post it on-site before construction begins.
Schedule inspections
Request inspections from LCG’s Permitting & Codes division ((337) 291-8461); your permit project is managed in the MGO portal. Typical checkpoints: footing/foundation, framing, rough-in MEP, insulation, final. A Certificate of Occupancy is required before occupancy.
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Get a free quote →Inspections in Lafayette Parish
Schedule inspections with LCG’s Permitting & Codes division. 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 Lafayette Parish permitting resources
- 🏛️ Lafayette Consolidated Government — Building Permits and Applications
- 💻 Lafayette Consolidated Government
- 🪪 LA State Licensing Board for Contractors
- 📜 LA Uniform Construction Code Commission
- 🏛️ LA Office of State Fire Marshal
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Lafayette Parish’s MGO online portal, 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 Lafayette Parish — our permit expediting services in Louisiana pair AI-driven document review with experts who know the Lafayette Consolidated Government (LCG) Development and Planning process, so your Lafayette Parish submissions move faster.
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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.
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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 LCG’s Development and Planning department before filing. This is not legal advice.