Environmental Rules in Lafayette Parish, LA (2026)
4 county-level rules, plus city-specific rules for 1 city in Lafayette Parish, Louisiana.
Verified from official government sources
Stormwater Management
Lafayette City-Parish bans any non-stormwater discharge into its storm sewer system and requires a $30 Land Disturbance permit for projects disturbing one acre or more, with an approved stormwater pollution prevention plan.
Lafayette City-Parish Stormwater Discharge Rules
Some RestrictionsLafayette City-Parish Consolidated Government Code § 34-451(a)
No person shall introduce or cause to be introduced into the MS4 any discharge that is not composed entirely of stormwater. This prohibition shall not apply to any non-stormwater discharge permitted under an NPDES permit ... or an LPDES permit ... issued to the discharger, provided that the discharger is, in the opinion of LCG, in full compliance with all requirements of the permit, waiver, var...
Erosion Control
Construction sites disturbing one acre or more in Lafayette Parish, city and unincorporated areas alike, must file a site-specific SWPPP, get a CDP Land Disturbance permit, and maintain erosion and sediment BMPs until the site is stabilized.
Lafayette Parish Construction Erosion & Sediment Control
Some RestrictionsLafayette City-Parish Consolidated Government Code § 34-471
Any person applying for a building permit or Land Disturbance permit from the CDP for a project involving the disturbance of one acre or more, or that is part of a development involving the disturbance of one acre of more, shall certify that (a) a site specific SWPPP has been developed for the site and any Land Disturbance activities at the site shall be in accordance with such SWPPP, and (b) a...
Flood Zones
New homes and additions in Lafayette's mapped flood hazard areas need a floodplain development permit and must sit at least 12 inches above the base flood elevation, in both the city and the unincorporated parish.
Lafayette Parish Floodplain Building Rules
Some RestrictionsLafayette City-Parish Consolidated Government Code § 26-704(b)(1)
New construction and substantial improvement of any residential structure shall have the lowest floor (including basement and garage, or carport) elevated to a minimum of 12 inches above the base flood elevation. Attached garages and utilities (including electrical, heating, ductwork, ventilating, plumbing, and air conditioning equipment) must also be protected to 12 inches above the base flood...
Flood Elevation Requirements
New homes and substantial improvements anywhere in Lafayette City-Parish's flood hazard areas must elevate the lowest floor at least 12 inches above the base flood elevation, with commercial buildings floodproofed to the same height, under a required Floodplain Development Permit.
Lafayette Parish Flood Elevation Freeboard Rules
Some RestrictionsLafayette City-Parish Consolidated Government Code § 26-704(b)(1)
Residential construction: New construction and substantial improvement of any residential structure shall have the lowest floor (including basement and garage, or carport) elevated to a minimum of 12 inches above the base flood elevation. Attached garages and utilities (including electrical, heating, ductwork, ventilating, plumbing, and air conditioning equipment) must also be protected to 12 i...
Environmental Rules by City in Lafayette Parish
1 cities in Lafayette Parish have their own environmental rules rules. Each link goes to that city's dedicated page with code citations.
All Lafayette Parish ordinances
See every category we cover for Lafayette Parish: parking, noise, fences, fires, animals, pools, and more.
Lafayette Parish Ordinance Hub →