Boat lift repair in Miami

Common boat lift faults

Stop using the lift if you see frayed cables or the boat sits unevenly.

• Motor hums but the lift does not move
• Lift raises unevenly or one side drops
• Frayed, kinked or flattened cables
• Grinding from the gearbox or pulleys
• Corroded switches and wiring

Old piles and wrecked docks

DERM exempts removing old piles and dilapidated docks, lifts and davits, and repairing dock decking or handrails to their original size. In older Miami neighbourhoods along the river many jobs start with that clean-out, so it can begin before the permit for the new structure is issued.

Lift repairs often turn into pile repairs, which bring the piling rules with them.[1]

The 25% waterway rule on the county short form

Miami-Dade DERM handles a single-family dock, davit, boat lift or mooring pile on its short form only if the structure does not protrude more than 25% of the waterway width. On the narrower canals off the Miami River and Little River, that width test is often what decides how far a dock or lift can reach.

A repair keeps the lift where it is; moving or enlarging it means meeting today's rule.[1]

The tide at the Miamarina gauge

NOAA's Miami Miamarina station on Biscayne Bay records a mean tidal range of 2.17 ft and a great diurnal range of 2.37 ft, with mean higher high water about 0.26 ft above NAVD 88 (1983 to 2001 tidal epoch). Those numbers set how far a lift has to travel, how far a floating dock rises and falls, and how much freeboard a seawall cap really has.

Repairs are scheduled when the cradle can be worked on above the water.[2]

What makes Miami waterfront work different

Most of Biscayne Bay and its natural tributaries, including the Miami River and Little River, are state-owned submerged lands, so docks over them need the state's consent alongside the DERM permit. The Biscayne Bay Aquatic Preserve is listed by DERM as a permitting contact, and FDEP's free online dock self-certification is not available in aquatic preserves. The federal seagrass range used in dock design reaches central Biscayne Bay.[1][3][4]

City of Miami seawall height

In 2020 the City considered an ordinance (File 7338) to set a 6 ft NAVD 88 minimum for new and rebuilt seawalls east of US-1, outside the Miami River. We have not confirmed that it was adopted, so for every Miami seawall job we confirm the current height rule with the City before design.[5]

Permits in Miami

• Miami-Dade DERM, Coastal Resources Section: Class I permit for any work in, on or over tidal water, the Miami River included, with exempt, expedited and short-form routes for small jobs. Phone (305) 372-6575.
• City of Miami Building Department: Structural and zoning approval for seawalls, docks and lifts inside city limits.
• Florida DEP or South Florida Water Management District: State permit or exemption, and consent to use the state-owned bottom of Biscayne Bay, the Miami River and Little River, which DERM grants for most of the bay on the state's behalf.
• US Army Corps of Engineers, Jacksonville District: Federal sign-off for work in the bay and the river. SPGP VI, the small-project route, passed its stated 27 July 2026 expiry, so we confirm the current route for each job.

What causes most failures

In salt water, galvanic corrosion attacks metal parts, which is why sacrificial zinc anodes need regular replacement. Cables should be checked for fraying, corrosion, kinks, flattened sections and uneven tension, and pulleys and gearboxes need lubrication.[9]

Repair or replace the lift?

If the frame and beams are sound, replacing the motor, cables or gearbox is usually far cheaper than a new lift, which ThePricer puts at $7,000 to $14,000 installed for a 10,000 lb four-post model in South Florida.[10]

Frequently asked questions