| Business | Phone |
| Atlas Land Surveying 8 Moore Ln, Northborough 1532 | (508) 523-4559 |
| Connorstone Engineering 276 W Main St, Northborough 1532 | (508) 393-9727 |
| Seltec Engineering Inc Northborough 1532 | (508) 393-2969 |
| Seltec Engineering Inc 265 Main St # B, Northborough 1532 | (508) 393-9868 |
| R W Hart Assoc Inc 114 Brigham St, Northborough 1532 | (508) 393-3058 |