WallDockDeck
Miami Beach · Miami-Dade County

What flood zone is Miami Beach in, and what does it require?

+1 ft min freeboard (up to +5 ft)above BFE; homes also at least 9.0 ft NGVD

Miami Beach sets a minimum freeboard of 1 foot and lets owners build up to 5 feet above base flood elevation without the extra height counting against zoning. In A zones a home's lowest floor and equipment must also clear 9.0 ft NGVD (7.44 ft NAVD) and the crown of road or sidewalk plus 1 foot, whichever is highest. Improvements are added up over one year.

Source: Miami Beach Code of Ordinances Subpart A Ch. 54 Floods, Secs. 54-35, 54-48, 54-61 (Supp. 98); FEMA Community Status Book, Florida (www.fema.gov/cis/FL.html, report 10/03/2026); 2023 Florida Building Code, Residential R322.2.1, R322.3.2; 44 CFR 59.1; FEMA Flood Map Service Center · Verified 2026-10

The detail

FreeboardMinimum freeboard equals one foot; maximum freeboard equals five feet - Sec. 54-35.
Homes in A zonesLowest floor and service equipment no lower than 9.0 ft NGVD (7.44 ft NAVD), the crown of road or sidewalk plus one foot, or BFE plus minimum freeboard, whichever is higher - Sec. 54-48(1)(a).
Zone XLowest floor at least 1 ft above the highest adjacent grade or the crown of the nearest street, whichever is higher - Sec. 54-48.
Substantial improvementWork during a one-year period with cumulative cost of 50% or more; includes substantial structural alteration and Alteration Level 3 - Sec. 54-35.
Seawall noteFor seawalls, a substantial improvement is repair costing $500 or more per linear foot - Sec. 54-61.
Changing the rulesAny ordinance that would reduce, relax, diminish or repeal Chapter 54 standards needs a five-sevenths vote of the city commission, and Article II amendments go first to the Florida Division of Emergency Management for review - Sec. 54-30.
FEMA flood mapFEMA's Community Status Book (report dated 3 Oct 2026) lists Miami Beach as NFIP community 120651 with a current effective FIRM dated 11 Sep 2009. Zones are set parcel by parcel, so no single zone covers the whole city - check your own address.
NFIP historyFEMA record: first FIRM 29 Sep 1972; regular NFIP program since 29 Sep 1972; entered CRS 1 Oct 1996.
Flood insurance discountCRS class 5 - 25% off NFIP premiums for policies in the Special Flood Hazard Area (class in effect 1 May 2019).
State minimum2023 Florida Building Code, Residential R322.2.1 and R322.3.2 - lowest floor (A zones) or bottom of the lowest horizontal structural member (V and Coastal A zones) at BFE + 1 ft or the design flood elevation, whichever is higher.
Look up your zoneEnter the address in FEMA's Flood Map Service Center (msc.fema.gov), the official public source for FIRMs; an elevation certificate shows how your floor compares with the BFE.

Your city's height sheet

The elevation your city requires, the datum it is measured in, and the section of code that says so. One page.

Available for the cities whose rule we have verified and sourced.

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The county rule behind this

What applies across Miami-Dade County, and where each city departs from it.

Miami-Dade CountySeawall requirements county-wide

The same question, nearby

The rule changes at the city line, not the county line.

Miami-DadeCoral GablesMiami-DadeKey BiscayneMiami-DadeMiamiMiami-DadeSurfside

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Twelve signs a seawall is failing

What to look for, where to look for it, and what it means when you find it. Walk your wall in twenty minutes.

A screening sheet for owners, not an engineering inspection.

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