Living shorelines in Coral Gables

Who this is for

Owners replacing a wall who want a softer edge, owners with mangroves along the shore, and Coral Gables owners who want the fee incentive.

Fee breaks for living seawalls

Under Resolution 2025-342, Coral Gables cuts city permit fees by 20% for living seawalls that use pH-neutral cement or modular retrofit panels, and waives fees for existing homes making seawall improvements to address sea level rise.

That incentive can offset part of the cost of habitat features.[1]

Mangroves on the plans

Coral Gables dock and wall plans must show existing mangroves, and any trimming falls under Miami-Dade's Class I permit for coastal construction and mangrove trimming. DERM's mangrove permits run 3 years, against 2 years for a short-form structure permit, so a job that touches mangroves is scheduled differently.

Mangroves are the backbone of a living shoreline here, so the rules on them shape the design.[2][3]

Canals are part of the drainage

The City describes its canals as a drainage feature that carries floodwater away and protects them under City Code 86-3, with illegal dumping reported to the Marine Patrol. Riprap, mangrove trimming and wall work that narrows a canal are reviewed with that drainage role in mind.

A living shoreline is built on that rock rule, with plants and habitat panels added.[4]

What makes Coral Gables different

Dock, mooring and wharf plans must show dimensions across the waterway, existing mangroves and the installation method, and carry DERM's preliminary approval; revised plans need a DERM stamp again. Properties in Cocoplum Section II must include a copy of the Cocoplum dock plan. The City also asks for a notarised Public Works permit application, colour photos of existing conditions and a survey.[2]

Fee incentives

Under Resolution 2025-342, living seawalls with pH-neutral cement or modular retrofit panels qualify for a 20% reduction in city permit fees, and a separate fee waiver applies to existing homes making seawall improvements to address sea level rise.[1]

Permits in Coral Gables

• Miami-Dade DERM, Coastal Resources Section: Class I permit, plus the preliminary approval the City asks to see before it looks at any dock or wall plans. Phone (305) 372-6575.
• City of Coral Gables Development Services and Public Works: Building and Public Works permits for seawalls, bulkheads and docks, after DERM preliminary approval.
• Florida DEP or South Florida Water Management District: State permit or exemption for docks and walls on the Gables canals and the bay, where aquatic preserve rules apply to open bay frontage.
• US Army Corps of Engineers, Jacksonville District: Federal authorisation for bayfront and canal work, confirmed for each job since SPGP VI's stated July 2026 expiry.

Permits for living shorelines

Riprap follows the riprap rules: up to 10 ft waterward under SPGP VI and a state general permit for up to 100 linear feet at 2:1. In Miami-Dade, mangrove permits are valid for 3 years and limerock boulder riprap on a 2:1 slope gets an expedited authorisation after a DERM inspection.[8][3]

Frequently asked questions