New Hampshire · 2026 cost guide
How much does a deck cost in New Hampshire?
In New Hampshire, a deck costs about $5,100–$20,500 in 2026 for a 320 sq ft deck, from pressure-treated to composite — roughly $16.05–$64.2 per square foot. That’s about 7% above the U.S. average.
Estimate your New Hampshire project with the Deck Cost Calculator →
New Hampshire cost breakdown
| Typical total (a 320 sq ft deck) | $5,100–$20,500 |
| Per square foot | $16.05–$64.2 |
| Metro areas (Manchester, Nashua, and Concord) | up to ~$22,000 |
| Versus U.S. average | about 7% above average |
What’s different about New Hampshire
New Hampshire's snowy winters and ice dams require durable roofing and drainage detailing, with proximity to Boston nudging labor rates upward.
- Footings have to reach below the frost line, so deeper excavation adds cost.
Expect quotes toward the higher end in New Hampshire’s larger metros — Manchester, Nashua, and Concord — where labor and permit costs run above the state average, and lower in rural areas.
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.
Resale value
A wood deck recoups about 50–83% of its cost at resale — more than a composite deck — according to the annual Remodeling Cost vs. Value report.
Frequently asked questions
How much does a deck cost in New Hampshire?
In New Hampshire, a deck costs about $5,100 to $20,500 in 2026 for a 320 sq ft deck, from pressure-treated to composite — roughly 16.05–64.2 per square foot. That's about 7% above the national average, reflecting local labor and material costs.
What affects the cost of a deck in New Hampshire?
New Hampshire's snowy winters and ice dams require durable roofing and drainage detailing, with proximity to Boston nudging labor rates upward. Footings have to reach below the frost line, so deeper excavation adds cost.
How can I get an accurate deck building estimate for my home?
Use the free Deck Cost Calculator to plug in your real measurements and materials, then collect two or three local quotes to compare. Within New Hampshire, prices run higher in metros like Manchester, Nashua, and Concord and lower in rural areas.
Deck building cost by city in New Hampshire
Deck building cost in nearby states
Keep planning
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Open calculator →Sources & method
The New Hampshire figure is the national installed-cost range scaled by a New Hampshire regional cost index (its construction costs run about 7% above the U.S. average), then adjusted for the local climate and code factors above. It’s a 2026 planning estimate, not a quote — get local bids before budgeting.
- Smart Cost Hub methodology — how our cost ranges and indices are built
- U.S. Bureau of Labor Statistics — Producer Price Index (construction materials)
- Deck Quotes Near Me — local New Hampshire contractor quote data