The short answer
Airtasker shows a deck installation at $3,600 to $11,500 with a median of $7,550. Labour runs from $170 to $180 per square metre in Western Australia up to $200 to $210 in New South Wales.
Figures are Airtasker estimates from a page updated on 25 April 2025. They are not quotes. Larger decks can need council approval, so check with your council.
Cost by deck size
Airtasker lists these ranges:
- 10 m²$3,600 to $5,500
- 20 m²$3,800 to $5,300
- 30 m²$4,000 to $6,800
- 40 m²$5,000 to $7,000
- 50 m²$5,300 to $7,200
- Over 50 m²$5,900 to $11,500
Ask about approvals
Whether a deck needs a permit depends on its height, size and your state. Ask your builder who applies for approval and add it to the quote.
Price ranges
Ranges, not quotes. Use them to judge whether a quote is in the right area.
| Job | Low | High | Checked |
|---|---|---|---|
| Deck installation (median $7,550) | $3,600 | $11,500 | 11 November 2026 |
| Deck labour, Western Australia | $170 | $180 per m² | 11 November 2026 |
| Deck labour, Queensland | $180 | $190 per m² | 11 November 2026 |
| Deck labour, Victoria | $185 | $200 per m² | 11 November 2026 |
| Deck labour, New South Wales | $200 | $210 per m² | 11 November 2026 |
Source: Airtasker, deck cost. Page updated 25 April 2025, checked by us on 11 November 2026.
Common questions
How much does it cost to build a deck?
Airtasker shows $3,600 to $11,500, with a median of $7,550.
Sources
- Airtasker: deck cost guide, checked 11 November 2026