Deck Building Cost in Hawaii (2026)
Deck Building in Hawaii runs about 32% above the national average. A typical 320 sq ft project starts around $6,340–$10,560 for pressure-treated wood. Estimate your exact project below.
Deck Building Cost Calculator
Adjust the details for an installed-cost range tailored to you.
Length × width of the deck surface. A 16×20 deck is 320 sq ft.
Ballpark estimate for planning — not a quote.
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Deck Building cost in Hawaii by material
Installed cost for a typical 320 sq ft project in Hawaii.
| Material | Per sq ft | Typical HI project |
|---|---|---|
| Pressure-treated wood | $19.8–$33.0 | $6,340 – $10,560 |
| Cedar / redwood | $33.0–$52.8 | $10,560 – $16,900 |
| Composite (Trex-style) | $39.6–$79.2 | $12,670 – $25,340 |
What affects your Hawaii cost
- Decking material and railing style
- Height off the ground and stairs
- Footings, framing and permits
- Built-ins (benches, pergola, lighting)
- Local labor rates
Hawaii deck building — FAQ
How much does deck building cost in Hawaii?
In Hawaii, a typical 320 sq ft deck building project runs about $6,340–$10,560 for pressure-treated wood, installed. That's about 32% above the national average. Higher-end materials cost more — use the calculator above for your exact size and material.
How much does deck building cost per sq ft in Hawaii?
In Hawaii, installed deck runs about $19.8–$79.2 per sq ft depending on material (pressure-treated wood $19.8–$33.0, cedar / redwood $33.0–$52.8, composite (trex-style) $39.6–$79.2). That's about 32% above the national average.
How much does it cost to build a deck in 2026?
A typical 320 sq ft deck runs about $5,000–$8,000 in pressure-treated wood, or $10,000–$19,000 in composite, installed. Size, height, railings and material drive the price — use the calculator for a localized estimate.
Is composite decking worth it?
Composite costs roughly 1.5–2× wood up front but eliminates staining/sealing and lasts 25–30+ years, so total cost of ownership is often lower. It's the popular choice for homeowners who don't want annual maintenance.