| Business | Phone |
| Basinger Surveying 300 Saint James St, Columbia 65201 | (573) 443-3525 |
| C Stephen Heying Surveying 1202 Madison St, Columbia 65203 | (573) 442-3455 |
| Patchett & Co 1206 Business Loop 70 W # A, Columbia 65202 | (573) 875-1488 |
| Know Boundaries Land Surveying 835 Oak Lawn Dr, Columbia 65203 | (573) 474-5052 |