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.
Idaho sits right around the national average on cost, though rapid growth in the Boise area has tightened the labor market and pushed prices upward in recent years.
Reviewed by the AnyCoster Research Team · How we estimate costs
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.
Get your exact price from local deck pros
This is a ballpark — compare up to 3 free, no-obligation quotes from vetted contractors in Idaho.
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
Deck Building in Idaho: local factors that move the price
Climate & weather
Cold, snowy winters and dry, hot summers bring freeze-thaw cycles and wide seasonal swings, so snow-load-ready roofs and good insulation matter. High desert areas also see strong UV exposure.
Regional norms in Idaho
Pitched roofs built for snow, durable siding, and well-insulated envelopes suit the climate.
Best time to schedule
Late spring through early fall is the practical window before winter snow arrives.
Permits & code
Most Idaho jurisdictions require permits for structural, roofing, and mechanical work, with snow-load requirements central at higher elevations.
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.
Do I need a permit for deck building in Idaho?
Most Idaho jurisdictions require permits for structural, roofing, and mechanical work, with snow-load requirements central at higher elevations. Always confirm requirements with your local building department, and factor permit time and inspections into your schedule.
When is the best time to do deck building in Idaho?
Late spring through early fall is the practical window before winter snow arrives. Cold, snowy winters and dry, hot summers bring freeze-thaw cycles and wide seasonal swings, so snow-load-ready roofs and good insulation matter. High desert areas also see strong UV exposure.
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.