| Business | Phone |
| Anderson-Foreman Engineers Inc 537 Harden St, Columbia 29205 | (803) 799-6914 |
| Chao & Assoc Inc 7 Clusters Ct, Columbia 29210 | (803) 772-8420 |
| Ferrell Engineering 1140 Saint Andrews Rd # B, Columbia 29210 | (803) 798-7313 |
| Johnson & King Engineers 1223 Elmwood Ave, Columbia 29201 | (803) 779-8830 |
| Klinar Engineering 1913 Marion St # 102a, Columbia 29201 | (803) 779-2111 |