Great Falls, MT · 2026 cost guide
How much does a deck cost in Great Falls?
In Great Falls, a deck costs about $4,500–$18,000 in 2026 for a 320 sq ft deck, from pressure-treated to composite — roughly $14.11–$56.45 per square foot. That’s about 4% below the Montana average.
Estimate your Great Falls project with the Deck Cost Calculator →
Great Falls cost breakdown
| Great Falls typical range | $4,500–$18,000 |
| Great Falls per square foot | $14.11–$56.45 |
| Montana state average | $4,700–$18,500 |
| Versus Montana average | about 4% below average |
What’s different about Great Falls
Great Falls's sparse population can raise travel-related labor costs, and high winds with heavy snow load demand robust exterior 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 Great Falls?
In Great Falls, a deck costs about $4,500 to $18,000 in 2026 for a 320 sq ft deck, from pressure-treated to composite — roughly 14.11–56.45 per square foot. That's about 4% below the Montana average, reflecting local labor and permit costs.
What affects the cost of a deck in Great Falls?
Great Falls's sparse population can raise travel-related labor costs, and high winds with heavy snow load demand robust exterior detailing. Footings have to reach below the frost line, so deeper excavation adds cost.
How can I get an accurate deck building estimate in Great Falls?
Use the free Deck Cost Calculator to plug in your real measurements, then collect two or three local Great Falls quotes to compare. Prices vary by neighborhood, access, and project complexity.
Deck building cost in other Montana metros
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Open calculator →The Great Falls figure scales the Montana 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.