| Business | Phone |
| Conneston Construction 260 Highland St, Plymouth 3264 | (603) 536-4183 |
| Construx Inc 630 Daniel Webster Hwy # 1, Plymouth 3264 | (603) 536-3533 |
| Eldridge Septic Designs 70 Stinson Rd, Plymouth 3264 | (603) 536-3311 |
| R M Piper Inc 141 Smith Bridge Rd, Plymouth 3264 | (603) 536-4154 |
| Twin Oaks Construction 30 Cresent St, Plymouth 3264 | (603) 536-1051 |