Lafayette Parish, LA Environmental Rules: Flood Elevation Requirements (2026)
Key Facts
- Freeboard requirement
- 12 inches above BFE
- Applies to
- City of Lafayette + unincorporated parish
- Permit required
- Floodplain Development Permit
- Max penalty
- $100/day fine or 30 days jail
- Administered by
- Development and Planning Department Director
Summary
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.
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 inches above the base flood elevation.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 65).
Full Breakdown
Lafayette City-Parish Consolidated Government's floodplain ordinance covers both the City of Lafayette and the unincorporated parish (Sec. 26-702(a)). In special flood hazard areas, new construction and substantial improvement of residential structures, including basement, garage or carport, must have the lowest floor elevated at least 12 inches above the base flood elevation (BFE); attached utilities need the same protection. Nonresidential buildings must either meet that elevation or be floodproofed watertight to the same height, certified by a registered engineer or architect. A Floodplain Development Permit from the Development and Planning Department is required before construction begins.
Violations & Fines
Building without the required elevation or permit is a misdemeanor: up to $100 per day and up to 30 days in jail, with each day of noncompliance counted as a separate violation.
Frequently Asked Questions
Does this rule apply outside Lafayette city limits?
How high above base flood elevation must a new house be built?
Does this cover Broussard, Youngsville or Scott?
Sources & Official References
Other rules in Lafayette Parish
Compare Lafayette Parish to another location·View the Louisiana environmental rules overview
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