How Do You Choose a Marine Contractor in Miami-Dade?

Choosing a marine contractor in Miami-Dade comes down to three checks: current Florida licensing and insurance, a portfolio of verifiable seawall and dock work, and a written scope that names materials, depths, and pile spacing instead of vague promises. Souffront Contractors is a Florida-licensed structural engineering and marine construction firm based in South Florida, and we get calls most months from Coral Gables and Coconut Grove homeowners who already hired the wrong one once. This guide covers what to verify before you sign anything, what a marine contractor working near Biscayne Bay should be able to show you on site, and the questions that separate a real marine contractor from a general contractor who took on a seawall job to fill a slow month.

Key takeaways

Verify the contractor’s license directly with the Florida DBPR — don’t take a business card’s word for it.
A marine contractor should carry general liability insurance and workers’ compensation specific to over-water and waterfront work.
Get bids in writing with named materials (concrete PSI, pile type, tieback spacing) — a low bid that skips this is usually missing scope, not saving you money.
Seawall and bulkhead work generally runs $100–$250 per linear foot for moderate repairs, and $400–$600 per linear foot for full panel and tieback replacement — these are general industry ranges, not quotes.
In Miami-Dade, seawall and dock work near the water typically needs a Miami-Dade DERM environmental permit in addition to the city or county building permit.

What “marine contractor” actually covers

A marine contractor builds and repairs structures that sit in or over the water: seawalls, bulkheads, docks, piers, boat lifts, and the pilings that support them. It’s a narrower trade than general construction, and it overlaps with civil and structural engineering more than most homeowners expect. A contractor who mainly frames houses and occasionally pours a seawall cap is not the same as a seawall contractor who does that work every week.

Seawalls, docks, and boat lifts share load paths. Soil pressure behind a failing seawall can undermine a neighboring dock’s pilings; a dock that isn’t tied back correctly can pull on the seawall cap it’s attached to. A contractor who only knows one piece of the system will miss the interaction.

License and insurance — what to actually check

Florida requires a state-issued contractor license for marine and specialty structure work. Before you get a bid, ask for the license number and search it yourself on the Florida Department of Business and Professional Regulation site. Confirm three things:

The license is active, not expired or under discipline.
The license class covers marine/specialty structures, not just general residential building.
The company name on the license matches the company name on the contract you’re about to sign.

Insurance matters as much as licensing. Ask for a certificate of insurance showing general liability and workers’ compensation, and confirm the policy covers waterfront and over-water work specifically — some general liability policies exclude it. If a contractor won’t produce a certificate before you sign, that’s your answer.

What a real bid looks like

A serious bid from a marine construction company reads like an engineering document, not a price on a napkin. It should name:

Concrete strength (PSI) and rebar spec for any cap or panel work.
Pile type and embedment depth — vinyl sheet pile, concrete panel, or timber, and how far it goes into the substrate.
Tieback spacing and material, if the wall or dock requires them.
A start date, a completion window, and what happens if hurricane season or permitting delays push the schedule.
Whether permitting and Miami-Dade DERM coordination is included in the price or billed separately.

A bid that’s several thousand dollars cheaper than the others almost always means something was left out — no tieback replacement, no permit fees, no soil work at the toe of the wall. Read the low bid line by line before you assume it’s the better deal.

Red flags to watch for

No physical address, or an address that’s a UPS box.
Pressure to sign the same day, or a “price only good today” pitch.
A large upfront deposit before any permit has been pulled.
No mention of Miami-Dade DERM or the city building department when the work is clearly permit-triggered.
Reluctance to give you references from jobs completed in the last two years, on Biscayne Bay or a similar tidal waterway.

Do you need a seawall specialist, a dock builder, or both

If the job is a seawall or bulkhead only — cracking cap, leaning panels, soil loss at the base — you want a seawall contractor or bulkhead contractor with a documented history of panel and tieback replacement in your area. If the job includes a dock, davits, or a boat lift, you want a contractor who also does dock construction and dock repair — concrete, composite, and timber decking each install differently, and the pilings for a dock often sit close enough to a seawall that the two scopes need to be coordinated, not bid separately.

Property owners in Coral Gables, Key Biscayne, and along the Coconut Grove waterfront frequently need both in the same project — a seawall repair with a dock or lift tied into the same section of cap. Coordinating that as one job, instead of two separate contracts, avoids the finger-pointing that happens when one contractor’s work damages the other’s.

Permits: what to expect in Miami-Dade

Most seawall, dock, and marine structure work below the mean high water line requires an environmental permit through Miami-Dade DERM, in addition to the standard city or county building permit. Work in a High-Velocity Hurricane Zone also has to meet Florida Building Code wind and structural requirements. Ask the contractor directly who is pulling the permits, whose name is on the permit application, and whether the price you were quoted includes permit fees or not. A contractor who’s vague about this step is usually inexperienced with it, not trying to save you money by skipping it.

Talk to a Florida-licensed engineer

If you’re comparing bids and want a second opinion on whether the scope is complete, a Florida-licensed structural engineer can review it before you sign. Souffront Contractors inspects, engineers, permits, and builds seawall, bulkhead, and dock projects across Miami-Dade — one point of contact instead of three separate companies. Call (877) 420-7220 or use the form below to schedule a fixed-fee inspection or a bid review.

Frequently asked questions

How do I verify a marine contractor’s license in Florida?

Search the contractor’s license number directly on the Florida Department of Business and Professional Regulation website. Confirm the license is active, covers marine or specialty structure work, and that the company name on the license matches the name on the contract.

What’s the difference between a marine contractor and a general contractor?

A marine contractor specializes in structures that sit in or over water — seawalls, bulkheads, docks, pilings, and boat lifts — and understands soil pressure, tidal loading, and marine-grade materials. A general contractor builds a broader range of structures and may only take on marine work occasionally, without the same depth of experience in seawall or dock-specific failure modes.

Should I hire a separate engineer, or let the contractor self-certify the work?

An independent Florida-licensed structural engineer works for you, not for the contractor doing the repair, which matters when reviewing change orders or verifying that installed work matches the specification. Some marine contractors offer their own engineering in-house; ask directly whether the engineer reviewing the work has any financial interest in the construction, and get that disclosed in writing.

How much does seawall repair cost per linear foot in Miami-Dade?

Moderate seawall repairs generally run $100–$250 per linear foot, and full panel or tieback replacement runs roughly $400–$600 per linear foot. These are general industry ranges, not a fixed quote — actual pricing depends on wall height, access, soil conditions, and whether underwater work is required. A seawall inspection, by contrast, is priced as a flat fee, typically $1,500–$3,000, and is not tied to the wall’s length.

Do I need a permit for dock or seawall work in Miami-Dade?

Most seawall, dock, and marine structure work below the mean high water line needs an environmental permit through Miami-Dade DERM, plus a standard building permit from the city or county. Ask any contractor bidding the job who is responsible for pulling permits and whether permit fees are included in the price.

What questions should I ask before signing a marine construction contract?

Ask for the license number and insurance certificate, the specific materials and dimensions being used (concrete PSI, pile type, tieback spacing), who is pulling permits, the payment schedule tied to completed work stages, and references from projects finished in the last two years on a similar waterway.

How long does a typical seawall or dock project take?

A standard residential seawall repair or partial replacement typically takes several weeks to a few months from permit issuance to completion, depending on wall length, tieback work, and weather. Permitting timelines through Miami-Dade DERM and the local building department often take longer than the physical construction itself.

Can one company handle inspection, engineering, permitting, and construction?

Yes — some Florida firms, including Souffront Contractors, are structured to inspect, engineer, permit, and build seawall and dock projects under one contract, which removes the coordination gaps that happen when three separate companies each handle one piece of the job. If independence between the inspection and the construction matters to you, ask upfront whether the firm discloses any interest in bidding the repair work.

About Souffront Contractors Inc.: a Florida-licensed structural engineering and marine construction firm serving Miami-Dade, Broward, and Palm Beach counties. Explore our seawall construction and marine construction capabilities — see our seawall contractors page or call (877) 420-7220.