Nampa, ID · 2026 cost guide
How much does a deck cost in Nampa?
In Nampa, a deck costs about $4,600–$18,000 in 2026 for a 320 sq ft deck, from pressure-treated to composite — roughly $14.11–$56.43 per square foot. That’s in line with the Idaho average.
Estimate your Nampa project with the Deck Cost Calculator →
Nampa cost breakdown
| Nampa typical range | $4,600–$18,000 |
| Nampa per square foot | $14.11–$56.43 |
| Idaho state average | $4,600–$18,000 |
| Versus Idaho average | in line with average |
What’s different about Nampa
Nampa sits in the Boise metro with a slightly lower cost of living, sharing the region's tight labor market and cold-winter construction needs.
- 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 Nampa?
In Nampa, a deck costs about $4,600 to $18,000 in 2026 for a 320 sq ft deck, from pressure-treated to composite — roughly 14.11–56.43 per square foot. That's in line with the Idaho average, reflecting local labor and permit costs.
What affects the cost of a deck in Nampa?
Nampa sits in the Boise metro with a slightly lower cost of living, sharing the region's tight labor market and cold-winter construction needs. Footings have to reach below the frost line, so deeper excavation adds cost.
How can I get an accurate deck building estimate in Nampa?
Use the free Deck Cost Calculator to plug in your real measurements, then collect two or three local Nampa quotes to compare. Prices vary by neighborhood, access, and project complexity.
Deck building cost in other Idaho metros
Keep planning
Related calculators
Estimate wall area, siding squares, and boxes to order from footprint, stories, gables, and openings.
Open calculator →ConstructionFence CalculatorEstimate posts, rails, pickets, and concrete bags for a fence from its total length.
Open calculator →ConstructionConcrete CalculatorCalculate cubic yards of concrete and the number of bags for slabs, footings, and columns.
Open calculator →The Nampa 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.