Florida seawall information, with the sources attached
Published Florida seawall replacement figures range from $150–$300/linear ft to $350–$1,200/linear ft — a spread of roughly 8x. One publisher contradicts itself one month apart. Required seawall elevations differ between neighbouring cities, and at least one city sets a maximum as well as a minimum.
This site publishes what can be sourced, labelled by how well it is established, and leaves the contradictions visible instead of averaging them into a number that would look confident and be wrong.
What the labels mean
VERIFIED
Read from a primary or official source — statute text, adopted code, or an agency publishing about its own rule.
GENERAL RANGE
Consensus across independent secondary sources. Directional only. Never quote it for a specific property.
LOCAL EVIDENCE
A documented observation from one place — a storm, a programme, an award. True of that place at that time.
UNKNOWN
We looked and could not resolve it. Published as an open question rather than a number.
Every figure on this site carries one of these. Where sources conflict, both are shown. Nothing is averaged.
Five things that are actually established
Each of these was read from a primary or official source, not summarised from another site.
VERIFIEDBC-01
Broward County sets a countywide minimum tidal flood barrier elevation of 5.0 feet NAVD88, with a transition provision that runs to 2050.
Tidal flood barriers shall have a minimum elevation of five (5) feet NAVD88.
Applications for new or substantially repaired or substantially rehabilitated tidal flood barriers submitted prior to January 1, 2035 may be permitted a minimum elevation of four (4) feet NAVD88, if designed and constructed to accommodate a minimum elevation of five (5) feet NAVD88 by January 1, 2050.
Adopted by the Broward County Board of County Commissioners on March 31, 2020, as Article XXV of Chapter 39 of the Broward County Code of Ordinances.
The standard is written to address flood patterns and sea level rise projections through 2070.
The standard does not apply to oceanfront beaches or shorelines seaward of the Coastal Construction Control Line.
Read carefully: The 4-foot figure is a conditional transition allowance, not an alternative standard. It is only available where the barrier is designed and built to be raised to 5 feet by 2050.
Miami Beach requires a higher seawall elevation than the Broward County standard — 5.7 feet NAVD.
All new seawalls must be constructed to an elevation of 5.7 feet NAVD, or 4 feet NAVD if designed to support a future elevation of 5.7 feet NAVD.
In January 2021 the City strengthened a 2016 policy into an ordinance requiring new seawalls at 5.7 feet NAVD and requiring failing seawalls to be rebuilt to that minimum.
The City updated the Seawall Ordinance on July 23, 2025, changing definitions and construction standards for new and existing seawalls and other tidal flood barriers.
Read carefully: Crossing a municipal line in South Florida can change the required elevation. Miami Beach at 5.7 feet NAVD and Broward at 5.0 feet NAVD88 are different numbers on different data.
Florida statute exempts seawall restoration from certain state permitting, but the exemption is measured in inches.
Section 403.813(1)(e) exempts "the restoration of seawalls at their previous locations or upland of, or within 18 inches waterward of, their previous locations."
Section 403.813(1)(o) exempts the construction of private seawalls in wetlands or other surface waters when the construction is between and adjoins at both ends existing seawalls, follows a continuous and uniform seawall construction line with the existing seawalls, is not more than 150 feet in length, and does not violate existing water quality standards, impede navigation, or affect flood control.
Neither exemption supersedes permitting requirements under Chapter 161.
Read carefully: An exemption from one agency is not an exemption from all of them. A project can be exempt under 403.813 and still require city, county, water management district or Army Corps authorisation.
Cape Coral separates freshwater canal shorelines from tidal ones, and the freshwater rules are specific and measurable.
Engineering Design Standard Sheet H-3, "Seawalls — Freshwater Canal Alternate", sets minimum standards for alternatives to vertical bulkheads in freshwater systems only.
Maximum allowable slope to the waterline is 4 horizontal to 1 vertical (4:1); the standard notes 3:1 maximum at the property line.
Maximum water depth at the property line is 6 inches.
In freshwater canal systems concrete ramps may be constructed at a maximum width of 20 feet, extending no more than 15 feet into the water from the property line.
All plans must be sealed by a professional engineer registered in Florida.
Culvert pipe cannot extend more than 4 inches from the face of a seawall into the canal right of way.
The distance shown between the beginning of the slope and the property line is to be read as 15 feet minimum.
Read carefully: These are the freshwater alternative standards. They do not describe requirements for tidal shorelines in the same city.
There is no single Florida seawall price, and any site quoting one confident number is guessing. The published ranges disagree by roughly 8x, and the disagreement is not noise — it reflects real differences in scope, access, water depth, soil and how many agencies review the work.
The line between a seawall repair and a replacement is structural, not cosmetic. What tieback failure, panel damage and soil loss each imply about scope.
What a seawall inspection should examine above and below the waterline, what findings mean, and the published fee ranges — which conflict by an order of magnitude.
Published Florida seawall replacement costs range from $150 to $1,200 per linear foot — one publisher contradicts itself one month apart. The drivers behind the spread.
What to verify before signing a seawall contract in Florida, which agencies may need to review the work, and the claims that should make you slow down.
What full seawall replacement actually involves in Florida, when elevation requirements convert a like-for-like rebuild into a larger project, and who reviews it.
How concrete seawalls fail in Florida — spalling, rebar corrosion, cap separation and panel cracking — and which of those are surface problems versus structural ones.
A catalogue of visible seawall damage in Florida and what each sign suggests about the structure behind it — including which symptoms appear on the land side first.
Typical Florida seawall service life is reported at 30 to 50 years. What maintenance affects that range, and what a maintenance obligation means where code requires it.
The cap is the visible part and often the first to show damage, but cap condition is a poor proxy for panel and tieback condition. What separation indicates.
Bulkhead and seawall are used interchangeably in Florida, but code language distinguishes vertical bulkheads from sloped alternatives. Why the distinction matters.
Where the rules differ by city
We publish a city page only where at least two city-specific facts could be sourced. That gate excluded ten of the eighteen cities we examined. 8 cities across 3 metro areas cleared it.
Required seawall elevations differ by municipality across Broward and Miami-Dade. What the Broward County standard actually says, and where individual cities go further.
Cape Coral publishes measurable seawall design standards and separates freshwater canals from tidal shoreline. Fort Myers Beach carries documented Hurricane Ian surge. What each means for a wall.
Pinellas barrier island seawalls were overtopped from both directions in 2024. What the documented evidence shows about bayside versus Gulf-side exposure.
What this site is not
This site is an independent research resource. We are not a contractor, we do not perform work, and we do not employ crews.
We do not provide estimates, we do not dispatch anyone, and we do not maintain a roster of companies waiting for your call. If you describe a problem to us, a person reads it. The full explanation is here.