Boise, ID · 2026 cost guide
How much does a deck cost in Boise?
In Boise, a deck costs about $4,700–$18,500 in 2026 for a 320 sq ft deck, from pressure-treated to composite — roughly $14.68–$58.71 per square foot. That’s about 3% above the Idaho average.
Estimate your Boise project with the Deck Cost Calculator →
Boise cost breakdown
| Boise typical range | $4,700–$18,500 |
| Boise per square foot | $14.68–$58.71 |
| Idaho state average | $4,600–$18,000 |
| Versus Idaho average | about 3% above average |
What’s different about Boise
Boise's rapid growth has tightened contractor availability and raised cost of living, while cold winters and snow load shape freeze-resistant detailing.
- Footings have to reach below the frost line, so deeper excavation adds cost.
How the cost is built
Deck cost depends on size, decking material (pressure-treated pine is cheapest; composite and PVC are mid-range; tropical hardwood is premium), and structural extras like railings, stairs, and elevated footings. Permits and ledger flashing add cost on attached decks.
Frequently asked questions
How much does a deck cost in Boise?
In Boise, a deck costs about $4,700 to $18,500 in 2026 for a 320 sq ft deck, from pressure-treated to composite — roughly 14.68–58.71 per square foot. That's about 3% above the Idaho average, reflecting local labor and permit costs.
What affects the cost of a deck in Boise?
Boise's rapid growth has tightened contractor availability and raised cost of living, while cold winters and snow load shape freeze-resistant detailing. Footings have to reach below the frost line, so deeper excavation adds cost.
How can I get an accurate deck building estimate in Boise?
Use the free Deck Cost Calculator to plug in your real measurements, then collect two or three local Boise quotes to compare. Prices vary by neighborhood, access, and project complexity.
Deck building cost in other Idaho metros
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Open calculator →The Boise figure scales the Idaho cost range by a local metro index, then adjusts for the city’s labor market and climate. A 2026 planning estimate, not a quote — get local bids. See our methodology.