Home / Deck building cost / Derry, NH
Derry · Rockingham County · labor +24.2%
Deck building cost in Derry, NH
A 320 sq ft deck in pressure-treated pine deck comes to about $8,850 to $17,700 in Derry once the national installed price is adjusted for what carpenters earn locally. The town's fee schedule names this work puts the permit at $50 for a job at the midpoint.
Figures checked October 21, 2026 · sources
- 1Pressure-treated, 320 sq ft $8,850–$17,700
- 2Labor index +24.2% vs US
- 3Derry permit $50
Change size or material All Derry projects
Deck building prices in Derry 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 Derry's labor index. For 320 sq ft:
| Material | National | Derry | Midpoint |
|---|---|---|---|
| Pressure-treated pine deck | $8,000–$16,000 | $8,850–$17,700 | $13,300 |
| Cedar deck | $9,600–$15,050 | $10,450–$16,750 | $13,600 |
| Composite deck | $12,800–$25,600 | $13,650–$27,300 | $20,500 |
By size
| Deck area (sq ft) | Derry estimate | Permit at midpoint |
|---|---|---|
| 144 sq ft | $4,000–$7,950 | $50 |
| 240 sq ft | $6,650–$13,300 | $50 |
| 320 sq ft | $8,850–$17,700 | $50 |
| 400 sq ft | $11,050–$22,150 | $50 |
Pressure-treated pine deck.
Permit fee in Derry
Named in the schedule The fee schedule names this kind of work.
“108.2.6: Permit fees for new decks or replacement decks shall be $50 per deck.”
Applied to a 320 sq ft deck estimated at $8,850 to $17,700, that gives $50 to $50, about 0.38% of the midpoint price. Among the 21 towns on this site whose schedules cover this work, Derry ranks 3 from the cheapest; Goffstown is lowest at $40 and Hartford highest at $413.38 for its own midpoint job.
Schedule: Town of Derry Code, Chapter 30 Building and Property Maintenance Codes, § 30-4 (effective 1-3-2017, amended 5-15-2025). The building department decides whether a permit is required and what valuation it accepts; the national guide puts deck permits at $50–$150.
Why Derry differs from the national price
Derry is in Rockingham County, which the Bureau of Labor Statistics counts in the Boston-Cambridge-Newton, MA-NH metropolitan area (mostly Massachusetts). The median wage there for carpenters is $36.16 an hour against $29.12 nationally, so the labor part of a national price is scaled by 1.242 (+24.2%). That area is mostly Massachusetts; the New Hampshire statewide median for the same trade is $29.42, so a Derry quote may land nearer the low end of the range shown.
On this job the labor portion is $3,500 to $7,050 at national rates and $4,350 to $8,750 at Derry rates, so the midpoint rises $1,300 above the national figure. Against the New Hampshire statewide wage it is $1,200 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.
Derry at a glance
Derry had 34,691 residents in the state's 2025 estimate, up 4.8% from 33,109 in 2010, slower than the state's 7.5%. Its density of 973 people per square mile puts it 9 of 24 among the towns on this site.
The Census Bureau's QuickFacts page for Derry covers only the Derry census-designated place, not the whole town, so its housing figures are not used here.
Before asking for quotes
- The Derry 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 $8,850 or above $17,700 is not wrong in itself, but it is worth asking what it includes or leaves out.
Other projects in Derry
Roof replacement cost in Derry · Siding replacement cost in Derry
Deck building in nearby towns
| Town | Labor area | Estimate | Permit |
|---|---|---|---|
| Durham | Boston-Cambridge-Newton | $8,850–$17,700 | $142.94 |
| Exeter | Boston-Cambridge-Newton | $8,850–$17,700 | $116.38 |
| Londonderry | Boston-Cambridge-Newton | $8,850–$17,700 | $131.21 |
| Portsmouth | Boston-Cambridge-Newton | $8,850–$17,700 | $110 |
| Rochester | Boston-Cambridge-Newton | $8,850–$17,700 | $136 |
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: Town of Derry Code, Chapter 30 Building and Property Maintenance Codes, § 30-4.
- Population: NH Office of Planning and Development, 2025 Population Estimates of New Hampshire Cities and Towns (published July 17, 2026).
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.