| Business | Phone |
| Richard Funk & Assoc 484 Mulberry St 281, Macon 31201 | (478) 621-5010 |
| Powers Engineers 601 Thomaston St, Macon 31201 | (478) 745-9504 |
| Rawlings Engineering 2762 Roff Ave, Macon 31204 | (478) 741-4082 |
| Hulsey Mc Cormick & Wallace 5223 Riverside Dr 101, Macon 31210 | (478) 476-0700 |