Can I repair part of my dock and replace the rest?

Yes, and it's sometimes the right answer. If one section of a dock sits on sound pilings and another section doesn't, a partial replacement is a legitimate scope of work. The key is that the retained sections are genuinely solid — not just solid-looking. That determination has to come from an inspection below the waterline.

How long do wood dock pilings last in the Indian River or Mosquito Lagoon?

There's no fixed answer — lifespan varies widely depending on the wood species, the treatment grade, the salinity of the water, marine borer activity in that specific area, and how the dock has been maintained. The only reliable way to know where your pilings stand is to have them probed and inspected below the waterline by someone who knows what to look for.

Do I need a permit to repair my dock in Brevard County?

Most dock work in Brevard — and in Volusia, Orange, and Seminole counties — requires at minimum a county building permit, and depending on the scope and the specific waterway, may also require review from the Florida DEP or the U.S. Army Corps of Engineers. Like-for-like repairs sometimes qualify for a simpler process, but that determination is made by the permitting authority, not the property owner.

What's the biggest mistake homeowners make when deciding between repair and replacement?

Focusing on the deck surface instead of the pilings. New decking on a failing substructure buys you a short runway before the same problem comes back worse. The structure's condition below the waterline is what determines whether a repair is worth doing or a rebuild is the smarter call.

Dock Repair vs. Replacement: How to Read the Signs

Not every soft board means a new dock. Here's how to tell the difference before you spend a dollar.

A dock that looks rough might have decades of life left. One that looks fine on the surface might be sitting on pilings one good storm away from folding. Knowing the difference saves you from two equally bad outcomes: throwing money at a structure that should be torn out, or tearing out a structure that just needed a few boards replaced.

Start With the Foundation, Not the Surface

The decking — the boards you walk on — is what most people look at first. That's backwards. Decking is replaceable. Pilings are the skeleton of the structure, and they're what you should examine before anything else.

Pilings are the vertical posts driven into the riverbed or lagoon bottom that hold everything up. In Brevard County's brackish water — that mix of salt and fresh water common to the Indian River, Banana River, and Mosquito Lagoon — pilings take a beating from marine borers (small organisms that tunnel through untreated wood), tidal movement, and boat wake year after year.

Get in a kayak, a paddleboard, or hire a diver. Look at the pilings at and below the waterline. Here's what matters:

Soft spots: Probe the wood with a screwdriver or an awl. Good wood resists. Compromised wood accepts the point without much pressure. If a piling is soft more than an inch deep at or below the waterline, that's structural damage, not surface wear.
Lean: A piling that leans more than a few inches off vertical has likely lost its lateral resistance in the bottom sediment. One or two leaning pilings can sometimes be addressed with a sister-piling — a new piling driven alongside and bolted to the original — but a whole dock of leaning posts is a different problem.
Lengthwise cracks and splits: Surface checking (small cracks that follow the grain) is normal in aged wood. Deep longitudinal splits — ones you can fit a finger into — mean the structural integrity is meaningfully reduced.

If the pilings pass this test, you're probably looking at a repair job. If they don't, keep reading.

What Repair Looks Like

A dock is a good candidate for repair when the substructure — pilings, stringers (the horizontal beams connecting the pilings), and cross-bracing — is solid, and the damage is limited to components that sit above the waterline.

Common repairs that make sense:

Decking replacement. Boards rot from the top down in Florida sun and from moisture trapped beneath. Swapping out bad boards, or replacing an entire deck surface on a sound frame, is straightforward work.
Cleat and hardware replacement. Cleats, dock boxes, ladders, electrical conduit — these are accessories. Replace them as needed.
A small number of pilings. If a handful of pilings are compromised and the rest are solid, sister-pilings or individual piling replacement can extend the dock's life considerably. The key phrase is a small number. When a significant share of your pilings need attention, the math on repair starts to look like a losing argument — you're doing most of the hardest work anyway without getting the full benefit of a rebuilt structure.
Stringers and joists. Horizontal framing members above the waterline can often be sistered or replaced without touching the pilings, provided the pilings are sound.

One honest caution: repairs done on top of a deteriorating substructure are money that disappears into the water. If the framing you're bolting new decking to is already soft, you'll be back doing it again before long.

What Replacement Looks Like

A full rebuild becomes the practical answer when one or more of these conditions exist.

Most of the pilings are compromised. When a large portion of pilings need replacing, you're already doing most of the hardest, most expensive work. At that point, it usually makes more sense to bring the whole structure up to current code while you're at it.

The dock doesn't meet current Florida building code. Codes change over time. An older dock may not meet current standards for permitted work, and doing a significant repair on a non-compliant structure can create permit complications that cost more than starting clean. The Florida Department of Environmental Protection — the state agency that regulates what gets built over Florida's navigable waters — has authority over dock construction in the Indian River Lagoon system, and what they'll approve today may differ from what was allowed when your dock was originally built.

The layout no longer works. Maybe the dock was built for a smaller boat than you have now. Maybe you want covered mooring, a boat lift, or a wider deck. If the structure needs significant work and the design needs to change, replacement lets you get the right dock the first time rather than bolting new features onto an old skeleton.

Storm or impact damage to the substructure. Hurricanes and tropical storms that push surge through the Indian River and Mosquito Lagoon can shift pilings laterally, break underwater bracing, and compromise bottom embedment — the depth to which a piling is set in the sediment. That kind of damage is often invisible from above. If your dock survived a major storm but moves differently than it used to, get it looked at below the waterline before trusting it.

A shiny surface on a failing foundation. This is a common situation: someone upgraded the decking material years ago and the pilings were left alone. The aesthetic repair can mask how far the substructure has deteriorated. If you bought a property with a newer-looking deck on an older dock, the piling condition is worth verifying before you assume the structure is sound.

The Permitting Reality in Florida

In Brevard, Volusia, Orange, and Seminole counties, most dock work — repair or replacement — requires permits from the county building department and, depending on scope and location, from the Florida DEP and sometimes the U.S. Army Corps of Engineers. The Army Corps manages dredge-and-fill permits for work in navigable federal waters.

Repair work on a like-for-like basis sometimes qualifies for simpler permitting. Full replacements, expansions, or work in certain designated waterways — including parts of the Indian River Lagoon system — trigger a full permit review. Knowing this before you commit to a scope of work matters, because the permit process can influence what you build and how long the whole project takes.

A contractor with active permit relationships in Brevard, Volusia, Orange, or Seminole County is how you avoid a stop-work order mid-project.

Ask the Right Questions Before You Commit

Don't accept "looks fine" or "needs work" as answers from any contractor you bring out. Ask specifically: Which pilings are compromised? What is the embedment depth on the ones that are? What are the stringers made of and what's their condition? A contractor who can answer those questions concretely is one who actually looked.

Above-deck inspections miss the most important information. If someone quotes you a repair or replacement without looking at the pilings below the waterline, that quote is a guess.

Also ask whether the proposed scope will require a full DEP permit or a simpler building permit, and how long that process typically runs for that type of work in your county. Those answers affect your planning timeline more than almost anything else.

What to Do This Week

Walk your dock and probe the decking with a screwdriver. Any spot where the tool sinks more than a half-inch without resistance is a board that needs replacing — and a reason to look at what's beneath it.
Look at your pilings at the waterline. You don't need a diver yet. Get a flashlight and look at the wood where it meets the water. Dark staining, visible softness, or deep splits are all flags worth following up on below the surface.
Pull up any paperwork you have on the dock. Prior permits, inspection records, or original construction documents tell you what was built and to what standard. If you don't have them, the county building department can often pull permit history by address.
Take photos and date them. Before any contractor comes out, document what you see. It gives any professional a faster, more useful starting point.
Schedule an on-site look from a licensed marine contractor — not a phone estimate. The difference between repair and replacement is almost always a decision made by someone standing on the dock, looking at actual conditions, not someone looking at a photograph.

A dock is infrastructure, not decoration. The waterfront property owners who get the most out of theirs are the ones who catch problems early, understand what they're actually dealing with, and make the repair-or-replace call based on the structure's real condition — not on what they're hoping to hear.