Terrebonne Parish, Louisiana requires a building permit for new construction, additions, decks, structures and fences, issued by the parish's own Permits Division1. The parish also runs its own zoning ordinance, codified in Chapter 28 of the Terrebonne Parish Code of Ordinances, that governs how land can be used and where structures sit on a lot2. Septic systems are a state matter here: the Louisiana Department of Health, through the Terrebonne Parish Health Unit, permits and inspects every onsite sewage system rather than the parish itself3.
At a glance
- Building permit
- Required for new construction, additions, decks, structures and fences, issued by the Parish Permits Division1
- Zoning
- Parish-wide zoning ordinance (Chapter 28) sets allowed uses, setbacks and structure placement2
- Septic permits
- Louisiana Department of Health, Terrebonne Parish Health Unit; parish government does not issue septic permits3
- Owner-builder exemption
- Available statewide: an owner can build their own primary residence without a contractor license (one residence per year) by filing a notarized affidavit; a building permit is still required4
- Water wells
- A licensed water-well drilling contractor must install and register a new well; domestic wells use the state's post-installation notification process5
- Septic soil difficulty
- 0% of the parish's soils are free of severe limits for a conventional drain field6
- Flood zone review
- A dedicated Floodplain Administrator reviews Special Flood Hazard Area maps and elevation questions for the parish7
- RV / mobile home placement
- The parish publishes a Recreational Vehicle Affidavit and a Mobile Home Permit application; confirm parcel-specific occupancy and zoning limits before buying89
Who to call
Building permits
Terrebonne Parish Permits Division (Department of Planning & Zoning)
Building permits for commercial and residential construction, additions, mobile home placement, solar installation, plus mobile home and recreational vehicle placement affidavits, for Terrebonne Parish
Government Tower, 8026 Main Street, Suite 100, Houma, LA 70360
Zoning
Terrebonne Parish Zoning and Land Use (Department of Planning & Zoning)
Zoning district determinations, setbacks, accessory structure and fence rules, home occupation and special exception review, and zoning violation complaints for Terrebonne Parish
Government Tower, 8026 Main Street, Suite 202, Houma, LA 70360
Floodplain permits
Terrebonne Parish Floodplain Management
Flood Insurance Rate Map (FIRM) and Special Flood Hazard Area determinations, elevation certificates, and floodplain development questions for Terrebonne Parish
Government Tower, 8026 Main Street, Suite 100, Houma, LA 70360
Health department
Louisiana Department of Health - Terrebonne Parish Health Unit
Onsite sewage (septic) system permitting and inspection, plus Environmental Health, Vital Records and clinic services, for Terrebonne Parish
600 Polk Street, Houma, LA 70360
Contact details are copied from each office’s official page and were checked against it on September 28, 2026.
Do you need a building permit in Terrebonne Parish, Louisiana?
Yes. Terrebonne Parish requires a building permit before construction, and that requirement covers additions, decks, structures and fences, not just new houses1. The parish's Permits Division confirms this scope directly: permits cover new construction of primary and/or additional structures, additions to existing structures, mobile home placement, and solar panel installation8. That local requirement sits on top of Louisiana's State Uniform Construction Code, which the parish enforces110. State law also defines when a renovation counts as new construction for code purposes: an alteration is treated as extensive, and must meet current code, once the total area of all work areas exceeds fifty percent of the dwelling unit11. Fences fall under zoning as much as building code: on most residential lots, the Zoning Ordinance only allows a fence or wall of 4 feet or less in the front yard, with different limits in side and rear yards9.
Who is the Terrebonne Parish building department, and how do you reach them?
The Terrebonne Parish Permits Division, part of the Department of Planning & Zoning, is at Government Tower, 8026 Main Street, Suite 100, Houma, LA 70360, phone (985) 873-65678. Applications can be submitted in person to the Permit Office from 8:00 AM to 4:00 PM, Monday through Friday, or online at any time8. If you're placing a mobile home or a recreational vehicle rather than building a conventional house, this same office is still the right first call: it maintains a separate Mobile Home Permit process and a Recreational Vehicle Affidavit, distinct from a standard building permit8. Zoning is handled by a separate office in a different suite of the same building, covered next9.
Does Terrebonne Parish have zoning?
Yes. Terrebonne Parish has adopted zoning regulations, codified as Chapter 28 of the Parish Code of Ordinances, and administered by the parish's own Zoning Department29. Those regulations specify whether property can be used for residential, commercial or industrial purposes, and also regulate the placement, bulk and height of structures on a lot9. Louisiana law authorizes parish zoning districts, but Terrebonne Parish's zoning district for a specific parcel supplies the practical answer on allowed uses and setbacks129. A separate state rule sets a 22,500-square-foot lot area and 125-foot frontage for certain qualifying exempt subdivisions outside incorporated areas; that conditional rule is not a general minimum for every parcel13. The Zoning Department also regulates accessory structures and requires a building permit before construction9. Ask that office to confirm the parcel's district, setbacks, minimum dwelling size and whether a proposed tiny home is an allowed dwelling before relying on a listing description9.
How do septic permits work in Terrebonne Parish?
Septic permitting in Terrebonne Parish is not a parish function at all: it runs through the Louisiana Department of Health, Office of Public Health, via the Terrebonne Parish Health Unit314. Statewide, nobody may install, alter, or operate an individual sewerage system, including a septic tank system, without first obtaining a permit from the state health officer, and plans and specifications must be approved as part of that permit15. A septic tank system can only be used where a community-type (municipal) sewer system is not available16. Final approval requires either an on-site inspection by a state representative or a completed "Certification by Installer" form from a licensed installer, submitted within 15 days after the work is finished17. Soils make this section matter more than almost anywhere else on Bolthole Index: 0% of Terrebonne Parish's soils are free of severe limitations for a conventional drain field, reflecting how much of the parish sits low or below sea level67. In practice, that pushes many properties toward an individual mechanical treatment plant instead of a standard gravity system; Louisiana allows those only where community sewer is unavailable and the state health officer determines a conventional system wouldn't function properly, so budget for that state review as part of your site evaluation18.
Can you live in an RV or tiny home on your land in Terrebonne Parish?
Terrebonne Parish is unusual among the counties on this site in that it has its own forms for exactly this situation: the Permits Division's building-permit resources include a Recreational Vehicle Affidavit and a separate Mobile Home Permit application, alongside the standard residential building permit8. That means placing an RV or mobile home on your land is a recognized, permitted process here rather than an unaddressed gap, but the specific limits, such as how long you can live in an RV before it counts as a permanent dwelling, or what zoning districts allow it, aren't spelled out on the office's own summary page reviewed for this guide8. Because zoning controls structure placement and use across the parish, the safest path is to call the Permits Division or the Zoning Department directly with your parcel's address before you buy land expecting to live in an RV or mobile home while you build89.
Building a home in Terrebonne Parish: the steps, in order
First, check your parcel's zoning district with the Zoning Department, since it determines what you can build, required setbacks, and accessory-structure rules9. Second, find out whether your site is in the Special Flood Hazard Area by contacting the Floodplain Administrator; there's no charge for this, and it affects whether you'll need an elevation certificate before you can apply for a permit7. Third, confirm sewer availability: if municipal sewer isn't available, get your site evaluated and apply for your septic permit through the Louisiana Department of Health's Terrebonne Parish Health Unit before finalizing your house design, since 0% of the parish's soils are free of severe septic limitations146. Fourth, if you're doing the work yourself, file the notarized owner-builder affidavit to build your own primary residence without a contractor license, limited to one residence per year; a building permit is still required either way4. Fifth, submit your building permit application to the Permits Division, in person from 8:00 AM to 4:00 PM Monday through Friday or online at any time8. Sixth, if your driveway or any work will touch a Louisiana state highway right-of-way, apply for and receive a signed, numbered Access Connection Permit Certificate from LaDOTD before starting construction19. Finally, schedule your final septic inspection or installer certification, due within 15 days of completing the work17.
What to check before you buy land in Terrebonne Parish
Flooding and soils are the two things to take seriously here. Much of Terrebonne Parish sits low or below sea level, and flooding from rain, hurricanes and storm surge threatens the parish7. Annual precipitation is about 61.4 inches, while severe drought occurs in about 9.7% of years2021. Terrain is flat: 100% of the parish is at 15% slope or less, but 0% of its soils are rated free of severe limitations for a conventional septic drain field226. Confirm the Special Flood Hazard Area status with the Floodplain Administrator before buying7. For a new private water well, Louisiana requires a licensed water-well drilling contractor and state registration after completion; domestic wells follow the state's post-installation notification rules5. The typical home insurance premium is about $3,156 a year, the typical home value is about $184,739, the effective property-tax rate is about 0.5%, and the median property-tax bill is about $852 a year23242526.
Watch-outs
- The parish building-permit page lists coastal impact and coastal use among its permit resources; ask the Permits Division whether a separate coastal review applies before clearing or filling a site8.
- The Permits Division's Recreational Vehicle Affidavit and Mobile Home Permit forms show that RVs and mobile homes are an established, permitted use in the parish, but this guide could not confirm specific occupancy-length or zoning-district limits from an official page; ask the Permits Division directly before you buy8.
- With 0% of the parish's soils free of severe septic limitations, assume you'll need a full site evaluation, and possibly a mechanical treatment plant, before you commit to a specific parcel6.
Sources
- Terrebonne Parish Planning & Zoning (2026 county census)
- Terrebonne Parish Code - Chapter 28 Zoning (2026 county census)
- Louisiana Dept of Health - Onsite Wastewater Program (2026 county census)
- Louisiana State Licensing Board for Contractors - FAQ (2026 county census)
- Louisiana Administrative Code, Title 43, Part VI, §701 (Louisiana statewide rule), quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Terrebonne Parish Floodplain Management (tpcg.org)
- Terrebonne Parish Permits Division (Department of Planning & Zoning) (tpcg.org)
- Terrebonne Parish Zoning and Land Use (Department of Planning & Zoning) (tpcg.org)
- Louisiana Revised Statutes § 40:1730.28 (Louisiana statewide rule), quoted and re-checked
- Louisiana Revised Statutes 40:1730.23 — Enforcement of building codes by municipalities and parishes (Louisiana statewide rule), quoted and re-checked
- La. R.S. 33:4780.40 — Regulation authorized (Louisiana statewide rule), quoted and re-checked
- RS 33:106.1 — Planning commissions; exempt subdivisions; septic tanks and field drains permitted (Louisiana statewide rule), quoted and re-checked
- Louisiana Department of Health - Terrebonne Parish Health Unit (ldh.la.gov)
- Louisiana Administrative Code Title 51, Part XIII, Public Health—Sanitary Code (Louisiana statewide rule), quoted and re-checked
- Louisiana Administrative Code Title 51, Part XIII, Public Health—Sanitary Code (Louisiana statewide rule), quoted and re-checked
- Louisiana Administrative Code Title 51, Part XIII, Public Health—Sanitary Code (Louisiana statewide rule), quoted and re-checked
- Louisiana Administrative Code Title 51, Part XIII, Public Health—Sanitary Code (Louisiana statewide rule), quoted and re-checked
- LaDOTD Access Connections Policy (Louisiana statewide rule), quoted and re-checked
- Annual precipitation: Bolthole Index county data
- Share of years in severe drought: Bolthole Index county data
- Share of land at 15% slope or less: Bolthole Index county data
- Typical home insurance premium: Bolthole Index county data
- Typical home value (Zillow): Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written September 28, 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.