Key takeaways
- Sand + re-oil of ~30 m2 timber deck: $1,400-$3,200 in Adelaide (2026)
- Restoration with 30 percent board replacement: $4,500-$8,500
- A sound frame means restoration costs a fraction of a rebuild - an honest inspection comes first
- We connect you with 3 builders who assess the structure before quoting, not after
Jump to: indicative costs, common questions, or the full cost guide.
When a deck is worth restoring
A timber deck that has gone grey and rough is not necessarily failing. Greying is just UV breaking down the surface oil; the timber underneath is often still sound. If the frame, joists and footings are solid, restoration - sand back to clean timber, replace any cupped or split boards, re-oil - returns the deck to near-new for a fraction of a rebuild.
The deck is past restoration when the structure has gone: soft, spongy joists, movement when you walk on it, rusted-through bearer fixings, or rot where the frame meets the ground. A board surface can always be renewed; a failed frame cannot be oiled back to life. This is why an honest inspection has to come before any quote.
What a proper restoration includes
A full restoration sands the deck back to bare timber to remove the weathered grey layer, the old failed coating and any surface splinters. Cupped, split or rotten boards are replaced and matched. Protruding or bleeding screws are dealt with. Then the deck is oiled or stained to seal and recolour it.
A quote that is only 'we will give it a coat of oil' over a grey deck is a cosmetic patch - the oil will not bond properly to a weathered, un-sanded surface and it will fail within months. A real restoration quote itemises sanding, board replacement, fixing repairs and the final coat.
Decking Adelaide passes your deck to 3 builders who inspect it, give you a straight read on whether it is worth saving, and quote the restoration as itemised work. If the structure has failed they will tell you, rather than take your money for an oil coat over a deck that needs replacing.
Deck Restoration costs in Adelaide
Indicative 2026 ranges. No SERP competitor publishes structured pricing - we do, so you can sanity-check any quote.
| Deck type | Indicative range |
|---|---|
| Sand + oil only (~30 m2 timber) | $1,400-$3,200 |
| Restoration + 30% board replacement (~30 m2) | $4,500-$8,500 |
| Spot board repair + full re-oil | $900-$2,400 |
Indicative metro Adelaide ranges for 2026. Deck size, board condition and access drive the price. A pre-quote inspection sets the real scope.
BWC licence verified
Every builder we connect you with holds a current SA Building Work Contractor's licence, checked on the CBS register.
Itemised quotes
Frame, boards, fixings, oil and balustrades as separate line items - so you compare like for like.
Independent builders
Real, licensed Adelaide deck builders - never a cash-only operator working without insurance.
Deck Restoration - frequently asked questions
A sand-and-oil of a typical 30 square metre timber deck runs $1,400 to $3,200 in metro Adelaide for 2026. If around 30 percent of the boards also need replacing, expect $4,500 to $8,500. The price depends on size, board condition and access - an inspection sets the real scope before quoting.
Usually yes. Greying and surface splinters are UV damage to the coating and the top of the timber, not structural failure. If the frame and joists are sound, sanding back to clean timber, replacing damaged boards and re-oiling returns the deck to near-new. It is only beyond saving when the structure itself has rotted.
Far cheaper, when the frame is sound. A restoration is typically 15 to 30 percent of the cost of a full rebuild. The deciding factor is the structure: a solid frame can carry new boards and a fresh finish, but a failed frame cannot be restored and a rebuild becomes the honest answer.
Walk the deck and feel for spring, sponginess or movement. Look under it for soft joists you can push a screwdriver into, rusted bearer fixings, and rot where timber meets the ground. Any of these means the frame, not just the boards, needs attention. A builder's inspection confirms it before you spend on restoration.
Avoid the cash-only cowboy
The biggest decking risk in South Australia is an unlicensed, cash-only builder. With no BWC licence there is no building indemnity insurance, no recourse through CBS or SACAT if the work fails, and your house insurance can decline rot or structural claims tied to unlicensed work. Here is how to tell the two apart.
Walk away if
- Cash only, no written contract, no GST invoice
- Cannot give a BWC licence number to check
- Wants a deposit well above the 5% legal cap
- Quotes a single lump sum with no itemised breakdown
A real builder has
- Current BWC licence, verifiable on the CBS register
- Written contract and building indemnity insurance over $20,000
- Deposit at or under the 5% legal cap
- Itemised quote - frame, boards, fixings, finish, balustrades
Every builder we connect you with is BWC-verified. Read our full guide to BWC licensing in South Australia.
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