Three real Byron Bay decking quotes — line-itemised

By the WTD team · Updated May 2026

Decking cost guides give you ranges. Actual quotes give you reality. Three recent Byron Bay decking quotes — a Wategos coastal premium, a Bangalow hinterland pergola+deck combination, and a Mullumbimby standard backyard — broken down to the line item. Read them in order and the pattern of where the money actually goes becomes obvious.

Quick answer — three real Byron Bay decking quotes

Quote 1: Wategos coastal premium — $65,400

50sqm spotted gum deck. Cliff-edge site. Glass balustrade. Stainless 316 throughout. Quoted March 2026, completed May 2026.

Read between the lines: the headline line item ($32,500 for boards) is roughly 50% of the total. The other half is coastal premium — engineering, steel subframe, glass balustrade, stainless fixings, council DA. Standard inland decks rarely have most of these line items at all.

Quote 2: Bangalow hinterland combo — $28,300

40sqm merbau deck + 25sqm fixed pergola. Polycarbonate roof. Hardwood subframe. Attached to a Bangalow farmhouse. Quoted February 2026, completed April 2026.

Read between the lines: boards ($15,400) are 54% of total — close to the Wategos ratio. The rest of spend goes to different places: no structural engineering, no glass, no stainless. Instead pergola structure ($4,500 across posts, beams, roof) and a simpler council pathway.

Quote 3: Mullumbimby standard backyard — $16,150

22sqm treated pine deck. Simple flat block. No pergola. Quoted January 2026, completed February 2026.

Read between the lines: boards-to-total ratio is highest here at 48%. Nothing structural to spend on, no permit, no complex fixings. The line items that drive cost on premium builds (engineering, fixings, balustrade, DA fees) are nearly zero. Cost-per-sqm around $735 — right in the middle of the standard pine band.

What the three quotes show together

Read in sequence, the three quotes make the structure of Byron Bay decking pricing obvious. The board material is the biggest single line on every job but rarely more than 55% of the total. The other 45–50% is distributed differently depending on the site.

On a coastal premium build, the non-board spend goes to engineering, structural complexity, premium fixings, and council approval. On a hinterland pergola combo, it goes to the pergola structure and a simpler permit path. On a basic backyard, it mostly disappears — the spend is just boards, subframe, and a small set of finishing items.

The other pattern: cost-per-sqm scales with complexity but not as steeply as you might expect. Wategos is roughly $1,300/sqm. Bangalow is $700/sqm. Mullumbimby is $735/sqm. The Wategos premium is 80% above the others, not 4x — because the boards themselves only carry so much of the cost difference. What's actually different is everything around the boards.

How to read your own decking quote

Five things to look for when comparing Byron Bay decking quotes:

Boards as percentage of total. If boards are less than 40% of the total, the quote has unusually heavy structural or finishing spend — worth asking why. If boards are more than 60%, the rest of the spec may be too light.

Specific fixing grade. Look for "316 stainless" on coastal builds and "hot-dip galvanised" or "galvanised" inland. A quote that just says "stainless steel" without grade is a substitution-risk flag.

Subframe material and treatment level. H3 vs H4 treated pine differs significantly in lifespan. "Treated hardwood" should specify the species and grade.

Permit pathway and fees. Quote should say whether the deck is exempt, CDC, or DA pathway, and itemise expected council fees. Most build delays come from permit surprises.

Warranty terms in writing. Australian Consumer Law applies regardless, but a builder offering 5+ years on workmanship and citing manufacturer warranty on materials is a stronger commitment than vague "standard warranty" language.

Frequently asked questions

Are these three quotes representative of the wider Byron Bay market?

Yes — they sit at the lower end of the premium band, middle of the mid-tier, and middle of the entry tier respectively. Wategos / Belongil coastal builds regularly land between $45,000 and $120,000+, hinterland combos between $22,000 and $55,000, and standard backyards between $12,000 and $25,000.

Why is the per-sqm rate so different across the three?

Because per-sqm includes the entire build, not just the boards. The Wategos build pays for engineering, balustrade, fixings, and structural complexity that the Mullumbimby build doesn't need. Comparing per-sqm rates across complexity levels is misleading; comparing within the same tier is fair.

How much does the permit pathway actually cost?

Exempt development: $0 in council fees, builder may charge $200–$500 admin. CDC: $400–$1,200 council fees plus $800–$1,800 in private certifier costs. Full DA: $2,000–$4,500 council fees plus $2,500–$5,500 consultant and certifier costs. The CDC-vs-DA difference is often $3,500–$7,500 in total project cost.

Should I save money by buying boards myself and just paying for labour?

Rarely worth it. Decking specialists buy at trade rates typically 15–25% below retail, so headline savings are smaller than they look. Worse, supply-only-then-labour splits warranty responsibility — if a board fails, neither supplier nor builder takes responsibility. Most Byron builders won't install boards they didn't supply.

What's a fair builder margin on a decking quote?

15–25% on materials, 30–40% on labour is standard across the Byron market for established builders. Lower margins are either undercutting (often unsustainable), pre-quoting (banking on variations to recover), or operating without insurance / proper compliance. Cheaper isn't always better. Ask about public liability and workers comp coverage.

Can these quotes be used as a basis for negotiating with another builder?

Cautiously. Comparisons work when scopes are genuinely identical — same material, subframe, fixings, finish, permit path. "Builder X quoted $45k for similar size" is a weak negotiating position because spec is rarely actually similar. Use these as a reality check on whether your quote is in the right band, not as a price-anchor lever.