Deck Building Cost in Idaho (2026)
Deck Building in Idaho runs about the same as the national average. A typical 320 sq ft project starts around $4,800–$8,000 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 Idaho by material
Installed cost for a typical 320 sq ft project in Idaho.
| Material | Per sq ft | Typical ID project |
|---|---|---|
| Pressure-treated wood | $15.0–$25.0 | $4,800 – $8,000 |
| Cedar / redwood | $25.0–$40.0 | $8,000 – $12,800 |
| Composite (Trex-style) | $30.0–$60.0 | $9,600 – $19,200 |
What affects your Idaho cost
- Decking material and railing style
- Height off the ground and stairs
- Footings, framing and permits
- Built-ins (benches, pergola, lighting)
- Local labor rates
Idaho deck building — FAQ
How much does deck building cost in Idaho?
In Idaho, a typical 320 sq ft deck building project runs about $4,800–$8,000 for pressure-treated wood, installed. That's about the same as 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 Idaho?
In Idaho, installed deck runs about $15.0–$60.0 per sq ft depending on material (pressure-treated wood $15.0–$25.0, cedar / redwood $25.0–$40.0, composite (trex-style) $30.0–$60.0). That's about the same as 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.