Miami, FL Environmental Rules: Flood Elevation Requirements (2026)
Key Facts
- Freeboard required
- 1 foot above base flood elevation
- Applies to
- new construction and substantial improvements
- Nonresidential alternative
- engineer-certified dry floodproofing
- Enforced by
- city building official
Summary
New construction and substantial improvements in Miami's special flood hazard areas must elevate the lowest floor to the base flood elevation plus one foot of freeboard, per the city's flood damage prevention chapter.
(a)No new construction or substantial improvement of any residential structure shall be permitted in special flood hazard areas, and no permit referred to in section 20-3 of this chapter shall be issued therefor, unless said new construction or substantial improvement has the lowest floor (including basement) elevated to or above the level of the base flood elevation (100-year flood) plus one foot of freeboard
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 23 | Ordinance 11000 (Previous Zoning Code): Supplement 22 | Miami 21 (Zoning Code): ?).
Full Breakdown
Miami's building official cannot issue a permit for new construction or substantial improvement of a residential structure in a special flood hazard area unless the lowest floor, including any basement, is elevated to or above the base flood elevation (the 100-year flood level) plus one foot of freeboard. Nonresidential structures face the same one-foot-above-base-flood-elevation standard, but can substitute dry floodproofing certified by a registered engineer or architect instead of elevation. Manufactured homes, recreational vehicles and accessory structures below the base flood elevation carry their own anchoring and openings requirements under the same chapter.
Violations & Fines
Building without the required elevation or floodproofing is a code violation under Sec. 20-14, punishable per Sec. 1-13, with each day a separate offense; the city can also deny occupancy or seek injunctive relief.
Frequently Asked Questions
What is Miami's freeboard requirement?
Can a commercial building in Miami skip elevating the floor?
Sources & Official References
Other rules in Miami
Florida rules heatmap·Compare Miami to another location·View the Florida environmental rules overview
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Flood Elevation Requirements in Nearby Cities
How other cities in Miami-Dade County handle flood elevation requirements.