Deck Builders in New Hampshire
We build decks that survive New England: footings to frost depth, properly flashed ledgers, code fasteners, and composite or PVC surfaces that handle snow, ice melt, and shovels. Design, permit, and build come from one crew.
What a deck costs in New Hampshire in 2026
All-in ranges including design, permit, footings, framing, decking, railings, and stairs.
| Project | Typical cost | Notes |
|---|---|---|
| Pressure-treated deck | $18,000 - $35,000 | 200 to 400 sq ft, standard rail system, straightforward grade. |
| Composite or PVC deck | $30,000 - $70,000 | Trex, TimberTech, or AZEK surface with aluminum or composite rail and lighting. |
| Premium or multi-level deck | $70,000 - $150,000+ | Multi-level, hardwood or premium PVC, custom rail, integrated lighting, pergola. |
What is included in every deck we build
- Site design and a 3D rendering before a shovel moves
- Sonotube footings poured to New Hampshire frost depth
- Pressure-treated framing with code-required hangers and fasteners
- Properly flashed ledger attachment to the house
- Composite, PVC, or hardwood decking (Trex, TimberTech, AZEK, Ipe)
- Aluminum, composite, or cable rail systems
- Optional lighting, built-in benches, and pergola integration
- Permit drawings, town submission, and a one-year workmanship warranty
Building a deck that lasts a New England winter
Frost depth is not optional. New Hampshire footings go to four feet. Shallow footings are the single most common reason an older deck ends up out of level.
Composite usually wins here. Over ten years the maintenance savings offset the higher upfront cost, and composite handles snow shovels and ice melt better than pressure-treated boards.
Ledger flashing. Most deck failures start where the deck meets the house. We flash and fasten the ledger to current code every time.
Build season. Framing season runs roughly April through November. Spring calendars fill early, so a January or February contract usually gets a better slot.
Frequently asked questions
Planning a deck in New Hampshire?
Price it yourself with our free deck cost calculator, then book a free on-site estimate for a real number.