What a Dock Costs

Dock estimates vary more between neighbouring properties than almost anything else in marine construction, and it confuses people. The reason is usually one variable.

Distance to usable water

This dominates. A dock has to reach water deep enough to float your boat at low tide. On some lots that is a short walkway. On others it is a very long one, and every additional foot is decking, framing and more piles.

Two lots on the same street can differ by a factor of two or three on this alone. It is the first thing we establish and the first thing to understand about any estimate you receive.

The other variables

Water depth and tidal range. Depth affects pile length. Range affects deck elevation and whether a floating section is needed.

Pile count and length. Piles are a major cost component. Count follows the structure’s geometry; length follows water depth and required penetration.

Pile penetration and soils. How deep piles must be driven for adequate capacity. Soft or organic layers mean longer piles and more work, and this is not a place to economise.

Platform size. The terminal platform is more expensive per square foot than walkway because of the pile and framing density it needs.

Decking material. Real cost spread, and it also affects long-term maintenance and how the surface behaves underfoot in a Florida summer.

Framing and hardware. Where service life is decided. Marine-rated hardware costs more and is invisible once built — which is exactly why it is worth asking every bidder about it.

Boat lift. Lift, supporting structure and electrical. Significant, and often justified by the maintenance it saves on the vessel.

Roof or boathouse. Material, structure and additional permitting.

Accessories. Boxes, benches, cleaning tables, rails. Cheaper built in than retrofitted.

Access. Whether equipment can reach the shoreline, or whether the work has to be done from the water. Barge-based work is sometimes cheaper and sometimes much more expensive — draft, tide windows and obstructions decide it.

Permits. Fees and review time. More complex scope means more review.

Shore-end tie-in. Where the dock meets the bulkhead or seawall. If the wall also needs work, doing both in one project is normally cheaper than two.

Comparing dock estimates

Ask each bidder:

1. What length of walkway, and what water depth does it reach at low tide?
2. How many piles, what length, and to what penetration?
3. What framing material and what fastener and hardware specification?
4. What decking?
5. Is the lift, its structure and its electrical included?
6. Is permitting included, and whose name is on the application?
7. What is the warranty, and on what?
8. Do you carry USL&H coverage? (Federally required for work over water. Many marine bidders do not carry it. We do.)

Equalise those and the numbers converge. Where one stays low, you can usually see why.

Repair is cheaper

If you have an existing dock, repair and restoration is normally a fraction of replacement — particularly when the piles can be jacketed and restored rather than replaced. Piles are the expensive part; when they are saveable, the rest is comparatively straightforward.

Get a real number

Free, written, against your actual water. Call (904) 327-3931 or request an estimate.