Planning resource
The choices that shape a dock, in the order they actually matter — with the Northeast Florida specifics that generic advice leaves out.
Configuration
Shape follows how the channel runs past your property and how you intend to approach it in a boat.
Best for · Access and alongside tie-up
A walkway that ends where the water is deep enough. The least expensive option per foot and the right answer when access is the whole requirement. Works well where you tie up alongside rather than bow-in.
Watch for: No sheltered side, and nowhere to stand that is out of the walkway.
Best for · A protected side to bring a boat into
A walkway with a platform running parallel to the shoreline at the end. Gives you a sheltered approach side and somewhere to stand, fish or load that is not in the way of people walking past.
Watch for: Orientation matters. The platform should sit on the side away from the prevailing wake.
Best for · A lift on one side, clear water on the other
The platform extends both directions from the end of the walkway. The most usable deck area for the walkway length you pay for, and the usual choice where a boat lift goes on one side and the other stays open for swimming or a second vessel.
Watch for: More platform means more pilings. Size it for what you will actually use.
Fixed vs. floating
On a fixed dock, the distance from the deck down to your boat changes by the full tidal range across the day. Around Jacksonville that is a few feet. At the Nassau County end it is commonly around six. At high water you step across; at low water you climb.
A floating platform removes that variable entirely, because it rises and falls with the water. The step stays the same whatever the tide is doing — which is what makes kayaks, paddleboards and small craft genuinely usable rather than theoretically possible.
Fixed structures remain the better answer for concentrated load: a boat lift, a roof, a crowd. They are also unaffected by wake, which matters on the Intracoastal.
Choose fixed when
Choose floating when
Most of the best setups in this region are both — see floating docks and dock construction.
Materials
Framing is nearly always pressure-treated timber rated for its exposure. The real decision is the surface you walk on.
| Pressure-treated pine | Composite decking | |
|---|---|---|
| Up-front cost | Lower | Higher |
| Maintenance | Clean and seal on a regular cycle | Wash it |
| Barefoot comfort | Splinters as it weathers | Stays smooth |
| Heat in full sun | Moderate | Depends heavily on colour |
| Repairability | Board by board, materials anywhere | Board by board, product-specific |
| Typical use | Walkways, framing, budget-led builds | Terminal platforms, decks people sit on |
A common and sensible compromise on docks: treated timber along the walkway where people pass through, composite on the terminal platform where they stand, sit and go barefoot. More detail incomposite decking andwood decks.
Before you build
Ten things worth establishing before anyone quotes. Most can be answered in an afternoon, and together they remove nearly all the uncertainty from a first conversation.
Boat lift planning
Undersizing is the most expensive mistake in this category, and it nearly always happens because someone sized against dry weight.
Planning answers
Fixed structures are more rigid, carry concentrated load, support a lift or a roof and are unaffected by wake. Floating platforms keep the step down to the water constant across the whole tidal range, which makes small craft genuinely usable. In Northeast Florida — and especially at the Nassau County end where the range is largest — the best answer is frequently both: a fixed walkway out to usable water with a float attached at the end.
At the lowest tide of the day, work out from the bank with a marked pole or a weighted line, taking a reading every ten feet or so. Note the depth and the distance. That profile tells you where a structure needs to end. Doing it at high tide tells you almost nothing useful, because high tide is not the condition that strands a boat.
As short as it can be while reaching water that stays usable at the bottom of the tide. Reviewing agencies generally expect the same, and length is the dominant cost on any dock. The honest answer comes from a low-tide survey of your own frontage — not from what the neighbour built, because the shelf is rarely uniform.
It depends on height above the water, who uses the structure and whether any local requirement applies. Railings add cost and visual weight and are worth having where children, older relatives or anyone carrying gear use the dock regularly. Many owners railing the walkway and leave the terminal platform open.
Three things make the first conversation far more productive: roughly how you intend to use the water, whether a boat lift is in the plan now or later, and whether you prefer wood or composite underfoot. Everything else — length, piling count, framing — follows from measurements we take on site.
Next step
The brief builder walks through project type, waterway, dimensions, boat details, materials, access and timing — then produces a summary you can review before it goes anywhere.
Send us the basics and we will come back with a clear scope, realistic timing and an honest assessment of what your shoreline can support.
