Re-decking in Perth — replacing existing boards on an established subframe — typically costs $250–$450 per square metre for the boards and labour alone. The total job cost depends heavily on what the subframe inspection reveals once the old boards come off.
This guide is part of the Endure Perth deck cost series. It goes deeper on re-decking specifically — what's included, what blows budgets out, and how to assess whether your subframe is worth keeping.
Why re-decking quotes are unreliable before demo
Most re-decking quotes are written before anyone has seen the subframe. Boards come off and reveal rot, corrosion, or out-of-spec framing that wasn't visible from above. A $12,000 board-replacement quote can turn into a $25,000 full rebuild once the frame condition is assessed.
A responsible re-decking job starts with a proper subframe inspection — and an honest conversation about whether it's better value to rebuild from scratch or replace boards on an existing frame.
What's typically included in a re-deck
- Demo and disposal of old boards
- Subframe inspection and any spot repairs
- New boards (material of your choice)
- Fixings, edge trim, and finish
What's not automatically included: subframe sections in poor condition, new footings, stair replacements, balustrade upgrades.
Re-decking vs full rebuild cost
If the subframe is sound (H4 treated, correct joist spacing, no rot), re-decking with Merbau runs $250–$350/m². Composite boards on an existing frame run $350–$500/m² depending on product.
If subframe work is needed, those costs are on top. A partial frame repair on a 30m² deck adds $2,000–$6,000. A full rebuild on the same footprint is often more cost-effective than replacing a compromised frame piece by piece.
Use the Endure pricing calculator to estimate a fresh build comparison.