Seawall Resources

How to Choose a Seawall Contractor in Miami (Checklist)

Published July 16, 2026 · By the Miami Seawall Repair Pros Team

Seawall work sits in an unusual corner of home improvement: expensive, invisible when done right, catastrophic when done wrong, permit-heavy, and performed partly underwater where you can’t watch. The gap between a qualified marine contractor and a chancer with a barge is enormous — and the marketing looks identical. Here’s how to tell them apart before your money finds out for you.

Step One: Verify the License (Two Minutes, Actually Do It)

Florida licenses the trade specifically. What to look for:

• Marine Specialty Contractor (SCC) — the state specialty category covering seawalls, bulkheads, docks, pilings, and marine structures. Requires four years of marine construction experience, trade and business exams, financial stability, and insurance.
• Certified General Contractor (CGC) — the broad state license whose scope can cover seawall work, common among larger marine firms.
• Miami-Dade registration — county trades register with the Construction Trades Qualifying Board; local registration matters because local enforcement is where problems surface.

The verification: go to myfloridalicense.com, search the license number from the proposal (any legitimate contractor prints it there — its absence is itself an answer), and check three things: the license is current, it’s in the company’s or qualifier’s name actually contracting with you, and its category covers marine/structural work. While there, glance at complaint and discipline history.

Two minutes. It filters out a remarkable share of the field.

Step Two: Verify Insurance Like It’s Your Money — Because It Is

Marine construction is heavy work over water next to your house. Two policies are non-negotiable:

• General liability — covers damage to your property (and your neighbor’s — seawall mishaps travel)
• Workers’ compensation — covers injured workers; without it, an injury on your property can become a claim against you

The check: request a certificate of insurance sent directly from the insurer or agent (not a PDF from the contractor — certificates are forged more often than you’d hope), naming you as certificate holder, with policy limits and dates visible. Confirm the policy covers marine work; some GL policies exclude it. A contractor who hesitates at this request has answered a different question.

Step Three: The Permit Litmus Test

One sentence disqualifies a bidder instantly: “You don’t need a permit for this.”

In Miami-Dade, essentially all work in or over tidal water requires a DERM Class I Coastal Permit plus municipal review. A contractor proposing to skip that is proposing to transfer the risk — violations, removal orders, sale-time complications — entirely to you, while saving themselves paperwork. It also tells you how they handle everything else you can’t see.

The flip side is a qualification test: ask “how will you permit this?” A Miami-Dade contractor who actually works here will answer with specifics — DERM Class I, whether your scope qualifies for the ~10-day Expedited Administrative Authorization, what your city’s building department will want, whether the Biscayne Bay Aquatic Preserve applies to your shoreline (and its riprap requirement if so). Vague answers to the local-knowledge question predict vague everything.

Step Four: Questions That Separate the Field

Ask every bidder these, and grade the answers:

1. “How did you inspect below the waterline?” The structurally decisive surfaces — toe, submerged panels — are underwater. A quote produced without seeing them is a guess with a signature. (What a real inspection covers.)
2. “What’s the cause of the failure — not the symptom?” A sinkhole is a symptom; the failed joint feeding it is the cause. Contractors who quote symptom repairs sell the same fix twice.
3. “Is this wall a repair or replacement candidate, and why?” The honest answer engages the structural framework — panel condition, age, elevation. Beware the contractor whose every wall needs replacement, and the one whose every wall is fine.
4. “Who does the engineering?” Structural repairs and rebuilds need engineered drawings — for the permit and for the physics. In-house or contracted is fine; “we don’t really need engineering” is not.
5. “What’s the warranty, in writing?” Specifics by repair type, duration, and what voids it.
6. “What happens if you find conditions different from assumptions?” Every marine project carries discovery risk. Good contractors have a change-order process with your approval built in; bad ones have surprises.

Step Five: Compare Quotes That Are Actually Comparable

Multiple bids protect you only when they price the same project. Before comparing numbers, align:

A bid far below the pack almost always differs on one of these rows — find which before celebrating. Real market ranges are a useful sanity check on the whole spread.

The Red Flag Roundup

• Phone estimates for structural work
• “No permit needed” (see above — instant disqualification)
• No license number on the proposal; reluctance on insurance certificates
• Pressure tactics — “this price expires Friday” on a wall that took forty years to fail
• Large upfront deposits out of proportion to mobilization
• No local footprint — marine work is local knowledge work, and Miami-Dade’s regulatory stack proves it

Where That Leaves You

The vetting takes an afternoon: license lookup, insurance certificate, the six questions, comparable scopes. Against a five- or six-figure project on the structure holding your property out of the bay, it’s the best-paid afternoon available. We’re happy to be vetted by every line of it — the license, the insurance paper trail, the below-waterline inspection, the cause-first diagnosis, the permit plan with the EAA path named. That’s what the free inspection starts, and we’d suggest holding every bidder — us included — to exactly this standard.