317-622-8970Search all companies →Largest Construction Companies in New Hampshire (2026)
Factur's directory lists 1,637 construction companies in New Hampshire. These are the 10 largest of them by annual revenue, led by Pike Industries Inc ($188M), Methuen Construction Inc ($135M) and Interstate Electrical Services Corp ($90M).
Size mix: of the 1,634 with a known headcount, 94.6% have 1-50 employees, 4.6% 51-200, 13 companies 201-1000, 1 company 1001-5000 and 0 companies 5001+. 4 employ more than 500 people.
The 10 largest construction companies in New Hampshire by annual revenue
| # | Company | City | Employees | Annual revenue |
|---|---|---|---|---|
| 1 | Pike Industries Inc | Belmont | 639 | $188M |
| 2 | Methuen Construction Inc | Plaistow | 165 | $135M |
| 3 | Interstate Electrical Services Corp | Billerica | 588 | $90M |
| 4 | Air2 LLC | Pembroke | 98 | $85M |
| 5 | TJ McCartney Inc | Nashua | 314 | $69M |
| 6 | MTS Services | Londonderry | 101 | $64M |
| 7 | Hoyle Tanner & Associates Inc | Manchester | 100 | $64M |
| 8 | CSI Shelter Technologies | Londonderry | 214 | $64M |
| 9 | PROCON Inc | Hooksett | 305 | $61M |
| 10 | GL Garrad Hassan | Peterborough | 255 | $60M |
How this list is ranked
Companies are ranked by annual revenue (USD) as recorded on each company's profile in the Factur directory, highest first; companies with the same revenue are ordered by employee count. Only companies with a positive revenue figure on file are ranked, so a large private company with no reported revenue can be missing. The list covers companies whose record places them in New Hampshire and whose Factur industry is Construction. Figures are a snapshot of the directory, refreshed when the rankings are regenerated; open a profile for its current data.