Wood deck cost in New Hampshire
Statewide estimate from BLS wages and BEA prices. Reviewed Nov 4, 2026.
- Statewide range (300 sq ft)
- $7,550 – $15,200
- Per sq ft
- $25 – $50
- before permit
- Versus US midpoint
- Level
- US $11,400
- Metros covered
- 1
Across New Hampshire, a wood deck costs about $7,550 to $15,200 for 300 sq ft. Statewide, that midpoint is 0% above the US figure of $11,400. Carpenters earn a median $29.42 an hour in New Hampshire (US: $29.12).
New Hampshire has one metro in our dataset, Manchester, so the statewide and metro figures are close. The state figure uses BLS statewide wages, which include rural areas.
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Estimated cost for 300 sq ft in New Hampshire (statewide), standard level
$9,850 to $12,900
About $32.50 to $42.50 per sq ft before permits. Labor is about 44% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $5,400 | $7,050 |
| Labor | $4,400 | $5,700 |
| Permits and fees | $85 | $120 |
| Total | $9,850 | $12,900 |
Cost breakdown for 300 sq ft in New Hampshire
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $4,150 | $6,200 | $8,300 | 55% |
| Labor | $3,350 | $5,050 | $6,750 | 44% |
| Permits and fees | $50 | $100 | $160 | 1% |
| Total | $7,550 | $11,400 | $15,200 | 100% |
Weather windows across New Hampshire
Season matters for wood deck. For each New Hampshire metro below we took NOAA's 1991-2020 monthly normals from the nearest suitable station and counted comfortable months for exterior installation.
Manchester has 9 comfortable months (March through November), with about 40 inches of precipitation a year.
We do not adjust prices by month, because we have no reliable published data on seasonal pricing. Timing is still worth raising when you collect bids.
| Metro | Jan avg low °F | Jul avg high °F | Precip (in/yr) | Comfortable months |
|---|---|---|---|---|
| Manchester | 17 | 84 | 40 | 9: March through November |
Extras that change the New Hampshire total
Extras are quoted nationally and then scaled to New Hampshire by the average of the local wage index (1.02) and goods index (0.99), a factor of 1.00. Tick any of them in the estimator above to add them to your total. Treat these as planning figures: an add-on touches different trades than the main job, so the scaling is an approximation.
| Add-on | Local range |
|---|---|
| Add stairs (flat) | $1,400 – $2,600 |
If you are planning more than one job in New Hampshire
The table prices neighboring jobs at their usual sizes using statewide New Hampshire wages and prices. Against national midpoints, paver patio comes out highest (+5%) and concrete patio lowest (level), because each job leans on different trades.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Composite deck | 300 sq ft | $12,100 – $24,300 | +1% |
| Concrete patio | 300 sq ft | $1,250 – $4,000 | level |
| Paver patio | 300 sq ft | $3,150 – $5,700 | +5% |
| Detached garage | 576 sq ft | $29,000 – $58,200 | level |
New Hampshire metro-by-metro prices
New Hampshire has one metro in our dataset, Manchester, so the statewide and metro figures are close. The state figure uses BLS statewide wages, which include rural areas. Each row prices the default size with that metro's own BLS wages and BEA price levels, so the gap between rows is real local variation rather than a flat markup.
| Metro | Range (300 sq ft) | Midpoint | vs. state |
|---|---|---|---|
| Manchester, NH | $7,500 – $15,000 | $11,300 | −1% |
Wages behind the New Hampshire number
Statewide wages come from BLS's state-level estimates, which blend big cities with small towns and rural areas. 2 trades drive the labor line for this job, and the weighted ratio against the national wage level is 1.02 for New Hampshire.
For carpenters (47-2031, weighted 80%) the local median is $29.42 an hour, which is in line with the national $29.12. The middle half of them earn between $24.12 and $35.46 an hour. BLS counts 3,760 of them working in the state, 55.0 for every 10,000 jobs (US: 43.1), so the local bench is deeper than average.
Construction laborers (47-2061), 20% of the weighting: a median of $24.03 an hour, 6% above the US median of $22.66. The middle half of them earn between $21.61 and $28.32 an hour. About 4,330 work in the state. That is 63.4 per 10,000 jobs, compared with 70.5 nationally, so the supply of crews looks typical.
A crew paid at the 75th percentile for carpenters ($35.46 an hour) would add about $820 to the statewide midpoint; one at the 25th percentile ($24.12) would take off about $720. Use that as a rough guide to how far a bid can sit from our midpoint on wages alone.
BLS counts 683,290 jobs across New Hampshire (May 2025), which is 0.4% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 80% | $24.12 | $29.42 | $35.46 | $29.12 | 1.01 | state |
| Construction laborers (47-2061) | 20% | $21.61 | $24.03 | $28.32 | $22.66 | 1.06 | state |
| Blended | 100% | 1.02 | |||||
New Hampshire versus the states around it
New Hampshire ranks 16 of 51 (the 50 states plus DC) for wood deck, where 1 is the most expensive. The costliest is Hawaii at $14,300 and the cheapest Oklahoma at $9,900, both for 300 sq ft at the midpoint. New Hampshire sits at $11,400. The five states closest by workforce center are listed below.
| State | Distance | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Massachusetts | 40 miles away | $8,350 – $16,800 | $12,600 | +11% |
| Rhode Island | 90 miles away | $7,600 – $15,200 | $11,400 | level |
| Maine | 110 miles away | $7,500 – $15,000 | $11,300 | −1% |
| Connecticut | 110 miles away | $7,750 – $15,500 | $11,600 | +2% |
| Vermont | 140 miles away | $7,550 – $15,100 | $11,300 | level |
Wood deck: what moves the price in New Hampshire
Wood species
Pressure-treated pine is the cheapest at $25-$50 per sq ft installed. Ipe runs $50-$70 and bamboo $27-$52 (HomeGuide).
Height and stairs
A second-story deck needs more structure. New stairs run $1,400-$2,600 installed.
Railing
A wood or vinyl railing adds $20-$60 per linear foot.
Replacement versus new
Deck replacement costs $30-$55 per sq ft because of demolition and haul-away.
Permit
Deck permits average $50-$150. Many cities skip the permit for small, low, freestanding decks.
Quality levels and sizes in New Hampshire
The cited range is cut into three overlapping bands (basic, standard and premium) and scaled to statewide New Hampshire wages and prices. The grid prices the same bands at 4 common sizes.
Basic
$7,550 to $10,600
Pressure-treated pine, low to the ground, simple rectangle
Standard
$9,850 to $12,900
Cedar or upgraded pine, stairs and a railing
Premium
$12,100 to $15,200
Hardwood decking, multi-level, built-in features
| Size | Basic | Standard | Premium |
|---|---|---|---|
| 10x12 (120 sq ft) | $3,050 – $4,300 | $4,000 – $5,250 | $4,900 – $6,150 |
| 12x12 (144 sq ft) | $3,650 – $5,150 | $4,750 – $6,250 | $5,900 – $7,350 |
| 16x20 (320 sq ft) | $8,050 – $11,300 | $10,500 – $13,700 | $12,900 – $16,200 |
| 20x20 (400 sq ft) | $10,100 – $14,100 | $13,100 – $17,100 | $16,100 – $20,200 |
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Detailed wood deck report for New Hampshire, $9
Multi-page report for New Hampshire: low, typical and high cost, a line-item breakdown of materials and labor by trade, permit notes, the best months to schedule, a quote comparison sheet, red flags, questions for contractors, checklists and every source. Save your estimate above, preview page 1 free, and unlock the full report for $9 one-time, or get every report with CostLocal Pro.
Wood deck in New Hampshire: your questions
+How much does it cost to build a wood deck in New Hampshire?
$7,550 to $15,200 for 300 sq ft, using statewide wages and prices. Metro areas inside New Hampshire can sit above or below that.
+Which city in New Hampshire is cheapest for wood deck?
Manchester at about $11,300 (midpoint, 300 sq ft).
+Is wood deck cheaper in New Hampshire than the US average?
It is 0% more expensive: $11,400 against $11,400 for 300 sq ft at the midpoint.
+What share of the price is labor in New Hampshire?
About 44% ($5,050). Materials are 55%. Statewide labor for this job is weighted 1.02x the national wage level.
+What do carpenters earn in New Hampshire?
The BLS statewide median is $29.42 an hour, against $29.12 for the US. The 25th to 75th percentile range is $24.12 to $35.46.
+Where does New Hampshire rank for wood deck costs?
16th most expensive of 51 (the 50 states plus DC) at the midpoint, $11,400 for 300 sq ft. Rank 1 is the costliest.
+What do basic and premium wood deck work cost in New Hampshire?
For 300 sq ft, basic work runs $7,550 to $10,600 and premium work $12,100 to $15,200. Basic means: pressure-treated pine, low to the ground, simple rectangle. Premium means: hardwood decking, multi-level, built-in features.
+Does the season matter for wood deck in New Hampshire?
Yes where winters or summers are hard. Of the New Hampshire metros we cover, Manchester has the most comfortable months (9 of 12) based on NOAA 1991-2020 normals. Our prices do not change by month, so ask contractors whether they charge more or less in busy and slow seasons.
+What does "add stairs" add in New Hampshire?
$1,400 to $2,600, from a national range scaled by the statewide wage and goods indexes.
Wood deck by city in New Hampshire
Where these numbers come from
Base prices are national ranges from the sources below. We scale labor by local BLS wages, materials by BEA goods prices and permits by the BEA all-items price level. Full method on the methodology page.
- HomeGuide: How Much Does It Cost to Build a Deck? (2026) (accessed November 4, 2026)
- HomeGuide: 2026 Building Permit Costs | Fees & Cost Calculator (accessed November 4, 2026)
- HomeGuide: How Much Does Composite Decking Cost? (2026) (accessed November 4, 2026)
- BLS Occupational Employment and Wage Statistics, May 2025
- BEA Regional Price Parities, 2024
- NOAA NCEI U.S. Climate Normals, 1991-2020