Marine construction in Coral Gables

The bay off the Gables is preserve water

The Biscayne Bay Aquatic Preserve runs the length of the bay outside Biscayne National Park, and its access list includes the Matheson Hammock Park boat ramp beside the Gables bayfront. Bay-facing docks there fall under the 500 sq ft Outstanding Florida Waters exemption and the preserve's seagrass protection, while Miami-Dade manatee zones (rule 68C-22.025) govern boat speeds.

Grass beds decide where barges can anchor and where piles can go.[1][2][3]

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.

Shoreline stabilisation follows that rock rule.[4]

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.

Mangroves shape where structures can go.[5]

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.[6][7]

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.[6]

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.[4]

Permits for marine construction 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.

What is a marine contractor?

A marine contractor builds structures in, on or over the water: seawalls, bulkheads, docks, pilings and davits. In Florida, specialty contractors' scope is limited to a particular phase of construction, while a general contractor's scope is unlimited as to work requiring licensure under chapter 489. Always check a contractor's licence category on the DBPR licence search before you sign.[11][12]

Permits for work in the water

Most work needs a county environmental permit (in Miami-Dade, a DERM Class I permit), a city building permit, a state decision from FDEP or SFWMD and, where it applies, federal authorisation from the Army Corps of Engineers. Permits attach the state's manatee conditions to all in-water work.[7][13][14]

Frequently asked questions