Home / Deck building cost / Nashua, NH
Nashua · Hillsborough County · labor +1.2%
Deck building cost in Nashua, NH
A 320 sq ft deck in pressure-treated pine deck comes to about $8,050 to $16,100 in Nashua once the national installed price is adjusted for what carpenters earn locally. The city's fee schedule has no separate line for it, but its general residential rate puts the permit at $107.60 for a job at the midpoint.
Figures checked October 21, 2026 · sources
- 1Pressure-treated, 320 sq ft $8,050–$16,100
- 2Labor index +1.2% vs US
- 3Nashua permit $107.60
Change size or material All Nashua projects
Deck building prices in Nashua by material
Each row starts from the installed price per square foot of deck published in a national cost guide, then moves only the labor part of that price by Nashua's labor index. For 320 sq ft:
| Material | National | Nashua | Midpoint |
|---|---|---|---|
| Pressure-treated pine deck | $8,000–$16,000 | $8,050–$16,100 | $12,050 |
| Cedar deck | $9,600–$15,050 | $9,650–$15,100 | $12,400 |
| Composite deck | $12,800–$25,600 | $12,850–$25,700 | $19,250 |
By size
| Deck area (sq ft) | Nashua estimate | Permit at midpoint |
|---|---|---|
| 144 sq ft | $3,600–$7,250 | $75.92 |
| 240 sq ft | $6,050–$12,050 | $93.20 |
| 320 sq ft | $8,050–$16,100 | $107.60 |
| 400 sq ft | $10,050–$20,100 | $122 |
Pressure-treated pine deck.
Permit fee in Nashua
General rate The fee schedule has no separate line for this work; the town's general residential building-permit rate is shown as what it would charge if the building department requires a permit for it.
“New construction, additions, alterations — Residential, one- and two-family and townhouses (per square foot of area affected): $0.18.”
“Building permit: $50.”
Applied to a 320 sq ft deck estimated at $8,050 to $16,100, that gives $107.60 to $107.60, about 0.89% of the midpoint price. Among the 21 towns on this site whose schedules cover this work, Nashua ranks 5 from the cheapest; Goffstown is lowest at $40 and Hartford highest at $413.38 for its own midpoint job. A deck is treated here as an addition, charged per square foot of deck.
Schedule: City of Nashua Code, Chapter 105 Building Construction, § 105-28 Fee Schedule (amended 3-9-2021 by Ord. O-21-045). The building department decides whether a permit is required and what valuation it accepts; the national guide puts deck permits at $50–$150.
Why Nashua differs from the national price
Nashua is in Hillsborough County, which the Bureau of Labor Statistics counts in the Manchester-Nashua, NH metropolitan area. The median wage there for carpenters is $29.47 an hour against $29.12 nationally, so the labor part of a national price is scaled by 1.012 (+1.2%).
On this job the labor portion is $3,500 to $7,050 at national rates and $3,550 to $7,100 at Nashua rates, so the midpoint rises $60 above the national figure. Against the New Hampshire statewide wage it is $10 higher. Materials are priced at the national figure: shingle, lumber and equipment prices are set by distributors, not by a town.
A second published benchmark points the same way for the region: Remodeling's 2025 Cost vs Value report prices its “Deck Addition, Wood” job at $18,250 nationally and $20,600 in New England, and its “Deck Addition, Composite” job at $25,100 nationally and $25,800 in New England. Those are fixed specification jobs, not per-square-foot prices, so they are shown for comparison only.
Nashua at a glance
Nashua had 92,892 residents in the state's 2025 estimate, up 7.4% from 86,494 in 2010, about the same pace as New Hampshire as a whole (7.5%). Its density of 3,038 people per square mile puts it 5 of 24 among the towns on this site.
55.8% of Nashua's occupied homes are lived in by their owners, fewer than the 72.8% statewide, and the median owner-occupied home is valued at $403,900 (New Hampshire: $402,500). The midpoint estimate for this deck works out to 3% of that median value.
Before asking for quotes
- The Nashua building department can say for free whether this job needs a permit and what it will cost; the schedule linked above is its own published document.
- Written quotes that list the same scope (area, material line, removal, disposal, permit) can be compared line by line; the quote comparison guide walks through it with these numbers.
- A quote far below $8,050 or above $16,100 is not wrong in itself, but it is worth asking what it includes or leaves out.
Other projects in Nashua
Roof replacement cost in Nashua · Siding replacement cost in Nashua · Heat pump installation cost in Nashua
Deck building in nearby towns
| Town | Labor area | Estimate | Permit |
|---|---|---|---|
| Goffstown | Manchester-Nashua | $8,050–$16,100 | $40 |
| Manchester | Manchester-Nashua | $8,050–$16,100 | $120.63 |
| Merrimack | Manchester-Nashua | $8,050–$16,100 | $252.60 |
| New Ipswich | Manchester-Nashua | $8,050–$16,100 | $64 |
| Barnstead | Central NH | $8,050–$16,100 | $50 |
More: all deck building town pages · deck building cost in New Hampshire · permit fees by town · labor costs in New Hampshire
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.”.
- Labor index: O*NET OnLine, Carpenters (47-2031.00), New Hampshire local wages; area definitions: BLS, May 2025 Metropolitan and Nonmetropolitan Area Definitions.
- Permit: City of Nashua Code, Chapter 105 Building Construction, § 105-28 Fee Schedule.
- Population: NH Office of Planning and Development, 2025 Population Estimates of New Hampshire Cities and Towns (published July 17, 2026); housing: Census QuickFacts, Nashua.
All figures checked October 21, 2026. Estimates are ranges built from published averages, not quotes; a contractor's price depends on the house, access, the season and the scope written into the quote. Cost by Town does not perform or arrange work.