Home / Towns / Somersworth, NH
Strafford County · Boston-Cambridge-Newton labor area · 12,320 residents
Home project costs in Somersworth, NH
What a roof, siding, deck, fence, driveway or heat pump costs in Somersworth after national installed prices are adjusted for local trade wages. 3 of the six have their own page here because the city's fee schedule sets a permit fee for them.
- 1Roof $8,600–$13,200
- 2Siding $6,750–$20,200
- 3Deck $8,850–$17,700
Six projects at their reference sizes
| Project | Size, material | Estimate | Permit |
|---|---|---|---|
| Roof replacement | 2,000 sq ft, architectural | $8,600–$13,200 | $122.98 |
| Siding replacement | 1,500 sq ft, vinyl | $6,750–$20,200 | $146.05 |
| Deck building | 320 sq ft, pressure-treated | $8,850–$17,700 | $144.49 |
| Fence installation | 150 linear ft, wood | $3,250–$8,300 | no line |
| Driveway paving | 600 sq ft, asphalt | $3,500–$8,200 | no line |
| Heat pump installation | 2,000 sq ft home, ducted air-source | $11,450–$22,850 | no line |
“No line” means the city's schedule, as read on October 21, 2026, sets no fee this site could apply to that work; the building department can say whether a permit is needed.
Labor index by trade
Strafford County sits in the Boston-Cambridge-Newton, MA-NH. Each project's labor is scaled by the trade that does it:
| Trade | Local median | US median | Index |
|---|---|---|---|
| Roofers | $31.90 | $26.65 | +19.7% |
| Carpenters | $36.16 | $29.12 | +24.2% |
| Construction laborers | $30.49 | $22.66 | +34.6% |
| Paving, surfacing and tamping equipment operators | $32.94 | $25.64 | +28.5% |
| Cement masons and concrete finishers | $30.23 | $27.41 | +10.3% |
| HVAC mechanics and installers | $37.75 | $29.33 | +28.7% |
* BLS publishes no estimate for this trade in the Boston-Cambridge-Newton area; New Hampshire statewide median used. Wages: BLS 2025 wage data via O*NET OnLine.
The Boston-Cambridge-Newton area BLS uses for Strafford County is mostly Massachusetts, where trade wages run higher than in New Hampshire. The statewide New Hampshire medians are shown on each project page next to the area figure, so the gap is visible rather than hidden in one number.
Somersworth in numbers
Somersworth had 12,320 residents in the state's 2025 estimate, up 4.7% from 11,766 in 2010, slower than the state's 7.5%. Its density of 1,225 people per square mile puts it 8 of 24 among the towns on this site.
57.8% of Somersworth's occupied homes are lived in by their owners, fewer than the 72.8% statewide, and the median owner-occupied home is valued at $318,400 (New Hampshire: $402,500).
The city's permit schedule
Read from City of Somersworth, How much do permits cost? (no date shown). The lines this site uses:
“$9.00 per $1,000 of the construction value, when labor is included, plus a $25.00 application fee”
“$12.00 per $1,000 of the construction value, if labor is not included, plus a $25.00 application fee”
Nearby towns
Same labor area (Boston-Cambridge-Newton): Boston · Derry · Durham · Exeter · Londonderry · Portsmouth · Rochester · Salem.
All towns: town list · State: roof in New Hampshire, siding in New Hampshire, deck in New Hampshire, heat pump in New Hampshire · Guides: permit fees by town, labor costs in New Hampshire
Population: NH Office of Planning and Development, 2025 Population Estimates of New Hampshire Cities and Towns (published July 17, 2026); housing: Census QuickFacts, Somersworth (ACS 2020-2024). Checked October 21, 2026. Estimates are ranges from published averages, not quotes.