Coral Gables, FL Environmental Rules: Boat Dock Permits (2026)

Article III of Chapter 109 governs the construction, erection or installation of boat docks and similar landing facilities for water vehicles on the bayfront edge inside Coral Gables city limits (Sec. 109-62). Sec. 109-63 forbids the Development Services Department from issuing any permit for mooring piles, dolphins or docks that does not strictly conform to the article, so the numeric limits are conditions of permit issuance rather than design suggestions.

Three numbers define the footprint. A dock cannot extend more than 25 feet from the property line into Biscayne Bay (Sec. 109-64). Mooring piles or dolphins cannot be set more than 20 feet into the bay, measured from the dock line (Sec. 109-65). Every mooring pile, dolphin and dock must be set back at least 25 feet from the adjacent owner's lot line extended (Sec. 109-66). The setback is measured to the neighbor's side lot line projected out over the water, so a narrow lot loses usable dock frontage on both sides.

Sec. 109-66 also bars setting any dock, piling or dolphin until a permit is first granted by the appropriate U.S. government agency. Sec. 109-42(d) adds the state layer: after the city commission acts on an application, the applicant must obtain permits from the trustees of the internal improvement fund, the U.S. Army Corps of Engineers and any other state and federal agency concerned.

The city sorts in-water structure permits into classes under Sec. 109-40. Docks over submerged or tidal lands under trustee or Army Corps jurisdiction are Class 2. Docks, piers and boat slips in bays, lakes and canals under direct city control are Class 3, and the public works department is authorized to require those permits (Sec. 109-43). A Class 2 application needs four copies of a plan showing mean high water, mean low water, property lines and soundings, plus the names of riparian owners within 1,000 feet, an engineer's certification, and a public hearing before the city commission with at least 15 days' published notice (Sec. 109-42). The hearing and commission approval do not apply to installing mooring piles, to docks adjacent to residential lots located in accordance with the city zoning code, or to repairing a dock back to its original dimension where state construction permits were issued (Sec. 109-42(f)).

A city construction permit must expire less than one year after issuance; an extension for good cause requires a written request to public works before the original expiration date. The permit carries a performance bond of at least $1,000 or 25 percent of estimated cost, whichever is lesser, and at most 100 percent of estimated cost, held for six months (Class 2) or three months (Class 3) after approved completion. Fixed mooring structures also need an inspection and permit, and any mooring structure ten years or older needs a licensed engineer's certification and re-certification every five years (Sec. 109-44(b)).