Small Floating Deck: 6 Photos and Details From Prep to Finish

Janie Arant

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Wooden deck frame being built using concrete deck blocks on a gravel base.

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A small floating deck in pressure-treated lumber still means digging and leveling, with freestanding builds trading footing work for the inspection headaches of a ledger bolted to your house.

The deciding factor is what your ground is like: rocky or compacted soil makes freestanding almost automatic, while a simple lawn placement leaves room to move it later.

Every idea below starts with bare dirt and sixteen-inch joist spacing, because the ground and the board specs dictate everything that follows.

1. Deck Footing Placement

Wooden deck frame being built using concrete deck blocks on a gravel base.
Concrete deck blocks provide stable footings for the frame. Digging straight-sided holes helps keep everything level during construction. · 📷 @burbachl

Spray paint marks the spot, literally. Mark each footing spot with a cutout slightly wider than the block itself, then dig straight-sided holes three to four inches down.

Sloped ground meant some holes went deeper to keep the frame low and level across the yard. Footings set equally inside the perimeter, with room for the rim joist to overhang, kept the frame stable without extra lumber.

For a solo build, start with one joist at a time rather than suspending the whole frame at once; the weight gets unwieldy fast.

2. Weed Control

A wooden floating deck elevated above a bed of grey river stones in a garden.
The floating deck rests on a bed of river stones, preventing weeds from growing beneath. Landscape fabric is key to controlling unwanted plants. · 📷 lemonademakinmama.com

Grass under a new deck becomes a weed farm in about two seasons. Landscape fabric stops that before it starts, laid after the footings are in but before the beams go down.

Pin it with landscape staples and weight it down with any spare gravel you have on hand.

The gray river rock bed visible here does double duty: it blocks light to anything trying to grow and gives the deck a finished edge that reads as intentional rather than just a platform in the lawn.

Optional, but skip it and you will be pulling green shoots through the gaps later.

3. Deck Board Installation

Polished wooden deck boards installed with silver screws against grey siding.
The polished wood deck boards create a clean look. The creator emphasizes checking for bowed boards during installation. · 📷 @cb.building

Pressure-treated boards staggered across the joists turned out cleaner than I expected. Screw into every joist, not every other one, and cut boards so each end lands on a joist with no overhang hanging free.

If the math does not line up, rip the last board rather than leaving a sliver gap at the edge.

The glossy wet finish here is fresh sealant; apply after a few weeks of drying so the wood accepts it evenly.

I started at one end and worked straight, checking for bowed boards as I went and flipping the bad side down when I found one.

4. Framing + Setup

Wooden deck framing under construction supported by concrete blocks on the ground.
The concrete deck blocks provide a stable base for the elevated frame; make sure to level each beam for a solid build. · 📷 @rdmort

Removing sod sounds faster than it is. Bare dirt gives pedestals a solid seat; level each beam against the next before the joists go on.

A freestanding build lets you place footings where the ground cooperates, not where a house wall demands, which matters when roots run through your layout.

Screwing joists went fast once I remembered the hanger on the back side of the frame. I forgot one, had to scoot each joist half an inch, and still finished the afternoon.

5. Joist Spacing

A person pointing at the wooden joists of a deck frame under construction.
The parallel joists are laid out carefully for proper spacing. Adjustments may be needed if you’re using composite boards laid diagonally. · 📷 @luxurysstroi

Most decking run straight across joists handles sixteen-inch spacing fine; lay it diagonally and composite boards need tighter centers. Read the board specs before you make your first cut.

The cantilever at each end, where the joist hangs past the beam, gives a cleaner rim without requiring the footings to kiss the house foundation.

Beams set inside the deck edges let you keep footings well clear of the house wall, which the inspector will want to see. That distance matters more than it looks if you ever need to repair either structure.

The joists are spaced 16 in. on-center—the maximum allowed for Trex decking run perpendicular to the joists.

— Fine Homebuilding

6. Freestanding Deck Design

A wooden freestanding deck with tan sectional seating, a coffee table, and a large patio umbrella.
The freestanding deck carries its own weight on footings. This design avoids potential issues with inspections and water damage near the house. · 📷 @nexoradiy

A ledger bolted to house siding invites inspection headaches, thermal bridging, and water damage where you cannot see it.

The freestanding deck here avoids all of that by carrying its own weight on footings and beams all around, including the house side.

You will need more footings and a beam where a ledger would have hung, so the trade is material cost against long-term peace of mind. Balloon-framed houses, ICF walls, or any exterior insulation make the choice almost automatic.

For a small deck under a garden pavilion or out in the lawn, freestanding also means you can move it someday if the yard plan changes.

Building Codes and Permits

Thirty inches is the height that usually flips the switch. Below that, unattached, and most building departments leave you alone; above it, or any connection to the house, and a permit becomes likely.

I would still make the call. Cities differ, and so do HOAs, and "not attached" does not cover every local quirk.

One phone call to the building department costs nothing and beats finding out at resale that your deck needed paperwork it never got.

Tools Required

A circular saw, drill, and level carry most of the work.

The saw rips joists and boards to length; the drill drives structural screws and deck screws both; the level checks every beam before the next piece locks it in place.

Complex cuts or a diagonal layout might pull in a miter saw or speed square, but the basics handle a straightforward rectangle without strain.

A circular saw, drill, and level handle most of the cuts and fastening, though a tape measure and a hammer help when joist hangers fight back.

Deck Maintenance

Leaves left sitting on the boards will stain the surface; a quick sweep and rinse after they fall keeps the deck clean.

I would check the footings each spring for settling, especially after a hard frost, and look for any joist hanger that has worked loose.

The deck block and gravel foundation shifts more than a poured pier would; catching it early means shimming, not rebuilding.

Safety Considerations

Call 811 before any footing hole goes in. Gas, electric, and fiber lines run closer to the surface than most people guess, and a shovel through one turns a weekend project into a utility bill and an evacuation.

Once digging starts, keep the hole sides straight and the block sitting fully flat on its gravel bed. A footing that rocks or tilts will settle unevenly, and by next rainy season the deck can ride like a carnival attraction.

Level each block against its neighbors with a string level; the time spent here is cheaper than any repair later.

Frequently Asked Questions

Is a floating deck a good idea?

Yes, especially when the best spot in your yard sits away from the house or the ground makes deep footings a nightmare.

A freestanding build skips frost footings entirely and lets you put the deck where the view is, not where the house wall happens to be.

You trade a ledger and a permit headache for a few extra footings and a beam on the house side.

How much does a 10×10 floating deck cost?

Using standard pressure-treated decking and screws, a 10×10 runs closer to half the price of premium composite than double it. Composite with hidden fasteners pushes past $2,000 fast.

The frame lumber and ground-level footings stay roughly the same either way; the deck boards and fasteners are where the price splits.

Are floating decks legal?

Yes, though any deck over 30 inches high, anything attached to the house, or any structure built on part of it triggers permit requirements in most places.

Freestanding and low keeps you clear of that threshold in many jurisdictions, but your building department or HOA may have rules that override the general code. A quick call before you cut anything saves a teardown order later.

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