Composite decking cost calculator (per m², by state)
Composite and PVC deck boards in New South Wales cost from $104 to $306 per m² inc GST across 24 board sizes in 23 ranges, with a middle price of $147 per m² (prices checked up to 15 October 2026).
What the boards cost for your deck, at each board’s average price in your state.
Your deck and the result
Your deck
Board cost in New South Wales
- Boards for this deck in NSW, at each board’s average price
- $1,089 – $7,356 From $63.01 to $425.68 per m² across 44 boards, averages inc GST
- Boards priced for NSW
- 44 20 on the national average
- Deck area priced
- 17.3m²
- Sellers in NSW behind these averages
- 8
Cost per board
Board cost for 17.3 m² in New South Wales, at each board’s average price
| Board | Boards for this deck | Average $/m² | Per board | Sellers | Prices to |
|---|---|---|---|---|---|
| NewTechWood Terrace 138 × 25 Recommended | $2,633 | $152.35 | $116per 5.4 m board | 1 | |
| NewTechWood Soho 138 × 25 Recommended | $1,974 | $114.26 | $87per 5.4 m board | 1 | |
| Ekodeck Designer Series 137 × 23 Recommended | $2,245 | $129.93 | $98.23per 5.4 m board | 2 | |
| WoodEvo Advanced 140 × 25 · PVC RecommendedNational average of 3 sellers (none in NSW yet) | $3,158 | $182.77 | $143.11per 5.4 m board | 3 | |
| WoodEvo Advanced 200 × 32 · PVC RecommendedNational average of 3 sellers (none in NSW yet) | $3,351 | $193.92 | $143.11per 3.6 m board | 3 | |
| WoodEvo Home 138 × 23 RecommendedNational average of 4 sellers (none in NSW yet) | $2,194 | $126.94 | $98.02per 5.4 m board | 4 | |
| ModWood Xtreme Guard 137 × 23 Recommended | $2,667 | $154.32 | $117.50per 5.4 m board | 3 | |
| Trex Transcend Lineage 140 × 25 Recommended | $4,272 | $247.24 | $196.45per 5.48 m board | 3 | |
| Trex Select 140 × 22 Recommended | $3,110 | $179.96 | $143per 5.48 m board | 2 | |
| UltraDeck Essence 138 × 23National average of 1 seller (none in NSW yet) | $1,089 | $63.01 | $49per 5.4 m board | 1 | |
| PureSolid Classic Hollow 140 × 25National average of 1 seller (none in NSW yet) | $1,192 | $68.97 (assumes the gap between boards; see the note under the table) | $54per 5.4 m board | 1 | |
| UltraDeck LuxWood 138 × 23National average of 1 seller (none in NSW yet) | $1,467 | $84.88 | $66per 5.4 m board | 1 | |
| Sun Decking Classic 140 × 21.5National average of 1 seller (none in NSW yet) | $1,477 | $85.47 | $66per 5.4 m board | 1 | |
| UltraDeck LuxNature 138 × 23National average of 1 seller (none in NSW yet) | $1,711 | $99.02 | $77per 5.4 m board | 1 | |
| PureSolid Classic Solid 140 × 20National average of 1 seller (none in NSW yet) | $1,788 | $103.45 (assumes the gap between boards; see the note under the table) | $81per 5.4 m board | 1 | |
| FreshDeck Solid 140 × 22 | $1,790 | $103.59 (assumes the gap between boards; see the note under the table) | $78.10per 5.2 m board | 1 | |
| Ekodeck Flame Fighter 137 × 23 | $1,796 | $103.94 | $78.58per 5.4 m board | 2 | |
| Ekodeck Essentials 137 × 23 | $1,806 | $104.50 | $79per 5.4 m board | 2 | |
| PureSolid Pro Hollow 138 × 23National average of 1 seller (none in NSW yet) | $1,813 | $104.90 (assumes the gap between boards; see the note under the table) | $81per 5.4 m board | 1 | |
| NewTechWood Avenue 138 × 29National average of 1 seller (none in NSW yet) | $1,821 | $105.37 | $72.50per 4.88 m board | 1 | |
| Eva-Last Infinity IS 135 × 25.4 | $1,929 | $111.64 | $85.79per 5.45 m board | 1 | |
| Sun Decking Elite 140 × 23National average of 1 seller (none in NSW yet) | $1,992 | $115.26 | $89per 5.4 m board | 1 | |
| PureSolid Pro Solid 138 × 20National average of 1 seller (none in NSW yet) | $2,014 | $116.55 (assumes the gap between boards; see the note under the table) | $90per 5.4 m board | 1 | |
| Ekodeck Classic 137 × 23 | $2,055 | $118.94 | $89.92per 5.4 m board | 2 | |
| Modelo Prime 140 × 23 | $2,127 | $123.10 (assumes the gap between boards; see the note under the table) | $96.39per 5.4 m board | 1 | |
| Brite Decking HD PRO 138 × 23 | $2,437 | $141.03 | $108.90per 5.4 m board | 1 | |
| Everdeck Wood Composite Decking 137 × 23 | $2,445 | $141.49 | $107.73per 5.4 m board | 1 | |
| Ekodeck Summit Series 180 × 23 | $2,483 | $143.70 | $142per 5.4 m board | 2 | |
| ModWood Natural Grain 137 × 23 | $2,543 | $147.16 | $112.05per 5.4 m board | 2 | |
| ModWood Natural Grain 88 × 23 | $2,544 | $147.24 | $73.15per 5.4 m board | 1 | |
| NewTechWood Coastal 210 × 23 | $2,955 | $170.98 | $177.72per 4.88 m board | 1 | |
| Eva-Last Apex PLUS 140 × 24 · PVC | $3,507 | $202.94 | $161.48per 5.45 m board | 1 | |
| Eva-Last Apex PLUS 190 × 24 · PVCNational average of 1 seller (none in NSW yet) | $3,397 | $196.58 | $209.99per 5.45 m board | 1 | |
| ModWood Flame Shield 137 × 23 | $3,408 | $197.20 | $150.15per 5.4 m board | 1 | |
| Deckorators Decking 140 × 22National average of 1 seller (none in NSW yet) | $3,412 | $197.47 | $164.01per 5.8 m board | 1 | |
| ModWood Marina 137 × 32 | $4,077 | $235.95 | $141.71per 4.2 m board | 2 | |
| Trex Transcend 140 × 25 | $4,272 | $247.24 | $196.45per 5.48 m board | 3 | |
| TimberTech Vintage 140 × 25 · PVCNational average of 2 sellers (none in NSW yet) | $4,320 | $250.01 (assumes the gap between boards; see the note under the table) | $176.80per 4.88 m board | 2 | |
| MoistureShield Vision 140 × 25National average of 1 seller (none in NSW yet) | $4,436 | $256.72 (assumes the gap between boards; see the note under the table) | $203.99per 5.48 m board | 1 | |
| Eva-Last Pioneer 145 × 21 · PVC | $4,745 | $274.62 | $226per 5.45 m board | 2 | |
| Innowood INNODECK 175 × 30 | $5,280 | $305.56 (assumes the gap between boards; see the note under the table) | $198per 3.6 m board | 1 | |
| Millboard Weathered Oak 200 × 32National average of 3 sellers (none in NSW yet) | $6,406 | $370.71 | $272.25per 3.6 m board | 3 | |
| Millboard Enhanced Grain 176 × 32National average of 3 sellers (none in NSW yet) | $6,938 | $401.48 | $260.16per 3.6 m board | 3 | |
| Millboard Enhanced Grain 126 × 32National average of 1 seller (none in NSW yet) | $7,356 | $425.68 | $199.22per 3.6 m board | 1 |
Prices from 8 sellers in NSW. We don’t list the whole market, so other sellers may have different prices.
Boards only, inc GST: each board’s average price per square metre × the deck’s area, with no waste allowance, clips, screws, framing, footings, delivery or labour. From $63.01 to $425.68 per m² across 44 boards. Prices seen 8–15 Oct 2026. Sample data is badged.
Where no seller in NSW prices a board, its row uses the national average and says so (20 boards).
* Per m² assumes a 5 mm gap between boards: the brand doesn’t publish one.
Recommended and featured on the deck designer: Composite Decks picks these ranges: they are the boards we know well, and the deck designer is built around them. No brand or seller pays for the place. Every other range we track is listed below them in the usual order. Each price is an average of the retail prices we have seen for that board, with any price more than 25% above or below the middle price left out. Each seller counts once. Prices include GST and are per square metre of deck (the board’s cover width plus the gap beside it) and per board. The “Recommended and featured on the deck designer” boards come first. Composite Decks picks these ranges: they are the boards we know well, and the deck designer is built around them. No brand or seller pays for the place. Every other range we track is listed below them in the usual order. Below them, boards are listed by their average price per square metre, lowest first, unless you choose another order. No seller can pay to change the order or the figures. Every board’s average, on the NSW price page.
41 ranges and sizes we profile are price on request: no seller we track prices them yet. Get quotes with your free deck pack.
What the price leaves out: the frame underneath (a concept, not for construction)
| Item | Figure |
|---|---|
| Joists | 90 × 45 MGP10 H4 at 396 mm centres (Treated pine MGP10 (H3 / H4)) |
| Longest joist span | 1,170 mm |
| Bearers | 2 / 190 × 45 MGP10 H4 (double), 4 lines |
| Posts | 12 × 90 × 90 H4 post |
| Footings | 12 pads, 300–400 mm square |
| Clearance under the lowest member | 147 mm |
How this is worked out
A price per square metre is the price per lineal metre × 1,000 ÷ the board’s cover (its width plus the gap beside it, in mm). The board cost for your deck is that price × the deck’s area (17.3 m²), worked out for each board at its average price among the sellers in your state (the national average where no seller there prices it), with any seller more than 25% above or below the middle price left out.
The figures come from the same engine as the free deck designer, run on the server for a rectangular deck against the house. The span tables behind its framing have been checked by a structural engineer, but every framed figure is still a concept figure: concept plan, not for construction. Have a builder, building surveyor or certifier check any design before you build it.
Cutting and waste
Cut plan
| Material | Stock bought (m) | Cut (m) | Waste |
|---|---|---|---|
| Composite 137 × 23 — Charcoal | 140.4 | 124.8 | 11% |
| 90 × 45 MGP10 H4 — joists | 46.8 | 45.6 | 3% |
| 90 × 45 MGP10 H4 — rim joists | 9.6 | 9.6 | 0% |
| 2 / 190 × 45 MGP10 H4 (double) — bearers | 19.2 | 19.2 | 0% |
| 90 × 90 H4 post — posts | 2.4 | 1.8 | 27% |
The engine’s checks (3)
Checks
| Check | Detail |
|---|---|
| Extra rot protection near the ground | 19 frame pieces sit 400 mm or less above the ground. Wood this close to the ground gets extra rot protection (H4 treatment) instead of H3. Posts are always H4. Nothing for you to do. |
| Last row of boards ripped to 25 mm | The last row of boards has to be ripped (cut down lengthwise) to 25 mm wide — a full board is 137 mm. To finish on a full board, make the deck depth (out from the house) 31 mm smaller (3569 mm) or 112 mm larger (3712 mm). Strips narrower than about 69 mm are hard to fix down and can split or cup. |
| Council approval — NSW | In NSW an open or roofed deck up to 25 m² and 1 m above the ground, at least 900 mm from the boundaries and behind the front building line, is usually exempt development, so no approval is needed. Heritage items, foreshore land and some bushfire land are excluded. Your deck is 17.3 m² and 450 mm high, within the 25 m² / 1000 mm limits of that pathway, so it may be exempt — confirm with your council before you build. |