| Business | Phone |
| Wtw & Garver 233 Wilson Pike Cir # 2a, Brentwood 37027 | (615) 377-3001 |
| Batson & Assoc Engineering 1113 Hidden Valley Rd, Brentwood 37027 | (615) 595-6570 |
| Sullivan Engineering Corp 1722 General George Patton Dr, Brentwood 37027 | (615) 377-3330 |
| Collier Engineering Co 7105 Crossroads Blvd # 107, Brentwood 37027 | (615) 331-1441 |
| Crouch Engineering 428 Wilson Pike Cir, Brentwood 37027 | (615) 791-0630 |
| Design & Engineering 5105 Maryland Way # 200, Brentwood 37027 | (615) 370-1779 |
| Ewing Engineering Inc 5700 Cloverland Park Dr, Brentwood 37027 | (615) 371-1561 |
| Garver Engineers 233 Wilson Pike Cir # 2a, Brentwood 37027 | (615) 377-1337 |
| Ingram Civil Engineering Group 5560 Franklin Pike Cir, Brentwood 37027 | (615) 370-7964 |