Building permits, zoning and septic rules in St. Helena Parish, Louisiana

Yes. St. Helena Parish requires an owner or authorized agent to obtain a permit before constructing, enlarging, altering, repairing, moving or demolishing a building, changing its occupancy, or performing regulated electrical, gas, mechanical or plumbing work¹. The parish administers an adopted building and residential code, and commercial structures need State Fire Marshal approval before the parish permitting process begins¹. Permitted construction must pass all required inspections before St. Helena Parish releases permanent electricity, and the environmental confirmation form must also be received¹. A certificate of occupancy can be issued after all requirements are met, but the parish page does not say that every project requires one⁵.

The St. Helena Parish Police Jury Building Department is the first stop for building permits and plan review¹. Call (225) 222-4549 or visit 17911 Highway 43 in Greensburg¹. The published process includes building, sewer and flood-elevation documentation, and commercial applicants must obtain State Fire Marshal approval before parish permitting¹. Permit and plan-review fees are due, but we could not confirm their current amounts; ask the Building Department for a fee schedule before budgeting. Owner-builders can qualify for a Louisiana contractor-license exemption under stated conditions, including an affidavit, but that exemption does not remove health or life-safety requirements⁴. Farmers have a contractor-license exemption for agricultural construction on owned or leased land, not a blanket exemption from building permits or safety codes⁴.

Unincorporated St. Helena Parish has no county zoning ordinance, so county zoning does not set minimum dwelling size, general minimum lot size, setbacks, lot coverage, building height, or occupancy rules for RVs, tiny homes, manufactured homes and accessory dwellings². That answer does not settle municipal zoning or private deed restrictions; confirm whether the parcel lies inside an incorporated municipality and review its title before relying on a proposed use. Subdivision rules remain a separate issue: a narrow state-law category limits planning jurisdiction over qualifying unincorporated single-family divisions while preserving controls over utilities, drainage, sewage disposal and street design⁶. The qualifying subdivision rule is not a general lot-size requirement for every parcel⁶.

The State Health Officer issues permits for individual sewage systems in St. Helena Parish, while the St. Helena Parish Environmental Health office handles local processing assistance³. Call 225-222-4412 or visit 53 North Second Street in Greensburg⁷. Before permit issuance or a site evaluation, the parish process calls for ownership and contact information, a legal survey, proposed use and occupancy details, a valid 911 address, water-service type, the required signature or agent authorization, and parish-issued permits³. Only about 23% of parish soils are rated without severe limitations for a conventional drain field, so make the site evaluation an early purchase contingency⁸. A homeowner may install an aerobic treatment system only after satisfying the applicable state education, certification or licensing conditions⁹.

Unincorporated St. Helena Parish has no county zoning rule restricting RV occupancy, tiny-home occupancy, manufactured-home occupancy or temporary camping². A tiny home that involves regulated construction or building systems still needs the applicable parish building permit¹. Wastewater is a separate constraint: installing, altering or operating an individual sewage system requires a State Health Officer permit³. We could not confirm whether composting toilets or other off-grid alternatives can replace an approved sewage system, so ask Environmental Health how wastewater must be handled before committing to the plan. Parcels inside incorporated municipalities may face municipal rules, and private deed restrictions can also limit a use even where county zoning does not.

1. Obtain a valid 911 address before Environmental Health processes the application¹.
2. Submit two plan sets and a site plan to the Building Department for review¹.
3. File the permit application with the legal description, survey, site plan and required payment¹.
4. After plan review, obtain the building and sewer permits and required flood-elevation documentation¹.
5. Complete the state septic-permit process through the parish Environmental Health office³.
6. Complete required inspections and submit the environmental confirmation and utility-connection paperwork; permanent electricity is withheld until both conditions are satisfied¹. After all requirements are met, the parish can issue a certificate of occupancy, although its page does not say every project requires one⁵.

Start with buildability, wastewater, flood documentation and legal access. Only about 23% of St. Helena Parish soils are rated without severe limitations for a conventional drain field, making septic feasibility a meaningful purchase contingency⁸. The parish permit process requires flood-elevation documentation after plan review, but the available rule does not supply flood-zone standards or exemptions for a particular tract¹. If access depends on a private, non-through driveway servitude, the route must be large enough for service and emergency vehicles⁶. A driveway connecting to a state highway requires a state highway access permit, so identify who maintains the road frontage¹⁰. For a private well, Louisiana generally requires a licensed driller and post-completion registration, while domestic wells follow an exception to the ordinary advance-notice rule¹¹. Finally, obtain current zoning, subdivision and deed-restriction answers for the exact parcel rather than assuming rural land is unrestricted.