| Business | Phone |
| Structural Consulting Group 6250 Shiloh Rd, Alpharetta 30005 | (678) 513-4242 |
| Geotesting Express 2662 Holcomb Bridge Rd 310, Alpharetta 30022 | (770) 645-6575 |
| Isg Technical Solutions 3700 Mansell Rd, Alpharetta 30022 | (770) 625-5165 |
| John Stanhope Professional Eng Westbrook Rd, Alpharetta 30004 | (770) 664-5952 |