Home / Deck building cost / States / New Hampshire
New Hampshire · carpenters rank 20 of 50 · labor +1.0%
Deck building cost in New Hampshire
A 320 sq ft deck in pressure-treated pine deck comes to about $8,050 to $16,050 in New Hampshire when the national installed price keeps its materials and its labor part is scaled to what carpenters earn statewide. Permit fees are set by each city or town, not the state.
Wages and housing figures checked October 21, 2026 · sources
- 1Pressure-treated, 320 sq ft $8,050–$16,050
- 2NH labor index +1.0% vs US
- 3Median home value $402,500
Change size or material All deck building pages
What carpenters earn in New Hampshire
New Hampshire's carpenters earn a median $29.42 an hour, close to the US median of $29.12. That ranks 20 of 50 states, in the upper half of the country. Applied to the labor share of a 320 sq ft deck, that adds about $50 to the national midpoint.
The index is statewide. Wages inside New Hampshire differ by metro area, and a contractor's price also depends on overhead, insurance, travel and how busy the season is, none of which a wage median captures. Town pages below use the wage area of their own county instead.
Deck building prices in New Hampshire by material
Each row starts from the installed price per square foot of deck that a national cost guide publishes and moves only the labor part by the New Hampshire index. For 320 sq ft:
| Material | National | New Hampshire | Midpoint |
|---|---|---|---|
| Pressure-treated pine deck | $8,000–$16,000 | $8,050–$16,050 | $12,050 |
| Cedar deck | $9,600–$15,050 | $9,650–$15,100 | $12,350 |
| Composite deck | $12,800–$25,600 | $12,850–$25,650 | $19,250 |
By size
| Deck area (sq ft) | National | New Hampshire |
|---|---|---|
| 144 sq ft | $3,600–$7,200 | $3,600–$7,250 |
| 240 sq ft | $6,000–$12,000 | $6,050–$12,050 |
| 320 sq ft | $8,000–$16,000 | $8,050–$16,050 |
| 400 sq ft | $10,000–$20,000 | $10,050–$20,100 |
Pressure-treated pine deck. The labor part of this job is $3,500–$7,050 at national rates and $3,550–$7,100 at New Hampshire rates.
New Hampshire homes and incomes
The median owner-occupied home in New Hampshire is valued at $402,500 (US: $332,700), 14 of 50 states. The midpoint estimate here is 3% of that value. Against the state's median household income of $99,031, the same midpoint equals 1.5 months of income. 72.8% of New Hampshire's occupied homes are owner-occupied (US 65.2%), so a larger share of households buy this work themselves.
Permits in New Hampshire
This site has read the fee schedules of 19 New Hampshire places that set a fee for this work:
| Town | Estimate | Permit | Schedule |
|---|---|---|---|
| Barnstead | $8,050–$16,100 | $50 | names it |
| Conway | $8,050–$16,100 | $219 | names it |
| Derry | $8,850–$17,700 | $50 | names it |
| Durham | $8,850–$17,700 | $142.94 | general rate |
| Exeter | $8,850–$17,700 | $116.38 | general rate |
| Fitzwilliam | $7,950–$15,950 | $146 | names it |
| Goffstown | $8,050–$16,100 | $40 | names it |
| Lebanon | $8,050–$16,100 | $160.65 | general rate |
| Londonderry | $8,850–$17,700 | $131.21 | names it |
| Manchester | $8,050–$16,100 | $120.63 | general rate |
| Merrimack | $8,050–$16,100 | $252.60 | names it |
| Nashua | $8,050–$16,100 | $107.60 | general rate |
| New Ipswich | $8,050–$16,100 | $64 | names it |
| Newbury | $8,050–$16,100 | $164 | names it |
| Newport | $7,950–$15,950 | $114 | names it |
| Portsmouth | $8,850–$17,700 | $110 | general rate |
| Rochester | $8,850–$17,700 | $136 | general rate |
| Salem | $8,850–$17,700 | $128 | names it |
| Somersworth | $8,850–$17,700 | $144.49 | general rate |
Other projects in New Hampshire
| Project | Trade index | Estimate |
|---|---|---|
| Roof replacement, 2,000 sq ft | Roofers +7.9% | $8,250–$12,500 |
| Siding replacement, 1,500 sq ft | Carpenters +1.0% | $6,050–$18,100 |
| Heat pump installation, 2,000 sq ft home | HVAC mechanics and installers +21.1% | $11,050–$22,100 |
States ranked next to New Hampshire
Maine ($8,100–$16,200) · Michigan ($8,050–$16,150) · Wisconsin ($8,050–$16,150) · Missouri ($8,000–$16,050) · Rhode Island ($8,000–$16,050) · Ohio ($8,000–$16,050)
New Hampshire town pages: Barnstead · Bow · Conway · Derry · Durham · Exeter · Fitzwilliam · Goffstown · Hudson · Lebanon · Londonderry · Manchester · Merrimack · Nashua · New Ipswich · Newbury · Newport · Portsmouth · Rochester · Salem · Somersworth.
More: all states · how contractors price a roof · comparing three quotes
Sources
- Installed price: HomeGuide: Cost to build a deck (Feb 10, 2026) — “Pressure-treated pine $25 – $50 (installed, per sq ft)”.
- Labor portion: HomeGuide: Cost to build a deck (Feb 10, 2026) — “The labor cost to build a new deck is $11 to $22 per square foot.”.
- Statewide wage: O*NET OnLine, Carpenters (47-2031), New Hampshire local wages (BLS 2025 wage data).
- Housing and income: Census QuickFacts, New Hampshire (ACS 2020-2024); US: QuickFacts, United States.
Checked October 21, 2026. Estimates are ranges built from published averages, not quotes. Cost by Town does not perform or arrange work.