Seawall construction, replacement, and substantial repair in Fort Myers requires a city building permit under Code Chapter 102 (Building Code) and Chapter 118 (Land Use Regulations), plus state and federal authorizations: a South Florida Water Management District Environmental Resource Permit (ERP), a US Army Corps of Engineers Section 10/404 permit, and — for any portion waterward of mean high water — a submerged lands authorization from the Board of Trustees of the Internal Improvement Trust Fund. Routine like-kind maintenance above mean high water generally does not require state/federal permits but still needs a city permit. After Hurricane Ian (2022) compromised seawall infrastructure citywide, the city's permit volume for seawall replacements has been historically high.
Seawalls are critical infrastructure on Fort Myers's Caloosahatchee River frontage and on the many canal-front residential neighborhoods (e.g., the Beautiful Boulevard / Edison Park canals). Permitting follows the same multi-agency framework as other shoreline work: (1) The city building permit is issued by BPI under Chapter 102 (Building Code, which adopts the 8th Edition (2023) Florida Building Code) and Chapter 118 (Land Use Regulations); seawalls are reviewed against the Marine Related Checklist and standard Lee County engineering details for cap and tie-back design. (2) Replacement of an existing seawall in the same footprint is typically eligible for a SFWMD ERP exemption or a Self-Certification under FAC 62-330.051, but new seawalls and any waterward expansion require a full Individual ERP. (3) USACE typically issues Nationwide Permit 13 (Bank Stabilization) or Nationwide Permit 3 (Maintenance) for seawall work in navigable waters of the Caloosahatchee. (4) State submerged lands consent is required from TIITF for any portion of the structure waterward of mean high water. Riprap and 'living shoreline' alternatives are increasingly favored by state and federal reviewers because they better dissipate wave energy and provide habitat — and in some cases qualify for streamlined Nationwide Permit 54 (Living Shoreline). Top-of-wall design elevation is driven by FEMA BFE plus wave run-up; many Fort Myers replacement walls post-Ian are being built one to two feet higher than the original to account for updated BFEs in the November 17, 2022 FIRM. Tie-back deadmen, cap reinforcement, weep holes, and toe scour protection are standard engineering details required by the City Engineer. Hurricane Ian's storm surge (peak measured 7-15 feet across Lee County) destroyed or undermined hundreds of seawalls; the city accelerated permit review for emergency seawall repairs in 2022-2023.
Building a new seawall, materially altering an existing wall, or operating in a known-failing condition without a permit violates Fort Myers Code Chapters 102 and 118 and is enforceable through Stop Work orders, Code Enforcement notices, and Special Magistrate fines up to $500/day under FS 162.09. State and federal violations stack: SFWMD/FDEP can assess up to $10,000/day under FS 403.121 for unpermitted work in waters of the state; USACE can issue cease-and-desist orders and require removal of unauthorized structures under the Rivers and Harbors Act and Clean Water Act. Unpermitted occupation of sovereign submerged lands exposes the owner to civil trespass damages to the State and possible after-the-fact lease fees plus penalties. A failing seawall that contributes to flooding of a neighboring property can also create civil liability under Florida nuisance and surface-water doctrines.
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