Palm Beach County, FL Environmental Rules: Flood Elevation Requirements (2026)
Key Facts
- Freeboard requirement
- 1 foot above Base Flood Elevation
- Alternate standard
- 18 inches above road crown (LARC)
- Applies in
- Zones AE, AH, VE, AO
- Enforcing agency
- Floodplain Administrator (Building Official)
- Max penalty
- $500 fine or 60 days jail
Summary
Unincorporated Palm Beach County requires new construction and substantial improvements in AE, AH, and VE flood zones to elevate the lowest floor at least one foot above the Base Flood Elevation, higher where road-crown data controls.
B. Additional Elevation of Buildings (Freeboard) 1. For New Construction and Substantial Improvements, including electrical systems, equipment and components, heating, ventilating, air conditioning, plumbing appliances and plumbing fixtures, duct systems, and other service equipment, in Zones AE, AH, and VE, the minimum elevation requirement (for the Lowest Floor or lowest horizontal member, as applicable) shall be at least one foot above the Base Flood Elevation. In areas without a Master Stormwater Drainage System, the minimum elevation requirement shall be the higher of one foot above the Base Flood Elevation or 18 inches above the Lowest Adjacent Road Crown (LARC).
Full Breakdown
Palm Beach County goes beyond the FEMA minimum in unincorporated areas. For new construction and substantial improvements in Zones AE, AH, and VE, the lowest floor or lowest horizontal structural member must sit at least one foot above the Base Flood Elevation. Where there's no Master Stormwater Drainage System, the higher of that figure or 18 inches above the Lowest Adjacent Road Crown (LARC) governs instead. Zone AO uses a comparable one-foot-above-depth standard, and floodproofing is allowed as an alternative outside Coastal High Hazard Areas and Coastal A Zones. The Floodplain Administrator, who is the county Building Official, reviews and enforces compliance before permits issue.
Violations & Fines
A building lacking documentation of Lowest Floor elevation is presumed a violation until proof is filed. The Floodplain Administrator can issue stop-work orders, and a conviction under F.S. § 125.69 carries a fine up to $500 or up to 60 days in jail, with each day of continued violation a separate offense.
Frequently Asked Questions
Does this freeboard rule apply inside cities like Boca Raton or West Palm Beach?
Is one foot of freeboard higher than the FEMA minimum?
Sources & Official References
Other rules in Palm Beach County
Florida rules heatmap·Compare Palm Beach County to another location·View the Florida environmental rules overview
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