Renovating in Nashua, NH
Nashua prices near the New Hampshire average but feels the pull of the Boston market: southern New Hampshire crews commute both directions, so peak-season scheduling is tighter than pricing suggests. No sales tax on materials remains a measurable advantage on larger jobs.
Typical Nashua project costs
| Project | Low | Likely | High |
|---|---|---|---|
| Kitchen remodel150 sq ft, mid-range finish | $49k | $66k | $88k |
| Bathroom remodel60 sq ft, mid-range finish | $25k | $34k | $46k |
| Roof replacement1,600 sq ft, mid-range finish | $79k | $132k | $212k |
| Home addition400 sq ft, mid-range finish | $130k | $177k | $236k |
| Basement finishing600 sq ft, mid-range finish | $39k | $60k | $88k |
| Whole-home renovation1,600 sq ft, mid-range finish | $245k | $339k | $471k |
| Deck building300 sq ft, mid-range finish | $16k | $26k | $42k |
| Siding replacement1,800 sq ft, mid-range finish | $79k | $132k | $212k |
| Garage addition480 sq ft, mid-range finish | $155k | $212k | $283k |
| Sunroom addition200 sq ft, mid-range finish | $65k | $88k | $118k |
New Hampshire regional index with a 1.01× Nashua metro factor, 10% contingency included. Budgeting estimates, not quotes.
Estimated range — based on BLS OEWS national average wages and BLS PPI material indexes applied to Our Haus baseline unit costs, as of June 2026. Estimates are shown as a range and help set expectations. They are not a quote, a verified price, or an appraisal of what a contractor will charge.
Housing stock and what it means for cost
Mill-era housing near the Nashua River, post-war capes and ranches across the north end, and newer construction toward the Massachusetts line. Older mill housing frequently carries undersized electrical service and original waste lines.
Neighborhoods: Downtown, North End, Crown Hill, Birch Hill, Mine Falls.
Permits and contract rules
Authority: City of Nashua Building Department
Building permits for structural work, additions, and layout changes; electrical and plumbing permits pulled by the licensed trade. Roofing typically requires a permit for full replacement.
New Hampshire does not license general contractors at the state level. Verify liability and workers' compensation coverage directly with the insurer, and confirm current state licenses for electricians and plumbers. There is no statutory written-contract threshold — put scope, payment schedule, and change-order terms in writing regardless.
Season and scheduling
Roofing and exterior work run April through mid-November. Proximity to Boston means spring books fast; January quotes are usually cheaper than May quotes for the same scope.
Check a Nashua quote