| Business | Phone |
| Area Survey Co 4810 S 76th St # 212, Milwaukee 53220 | (414) 325-6607 |
| Capitol Survey & Engrng Llc 11430 W Bluemound Rd 11, Milwaukee 53226 | (414) 302-4580 |
| William H Schmitt & Assoc 6330 W Appleton Ave, Milwaukee 53210 | (414) 445-3833 |
| Turning Point Systems Group 6480 N Industrial Rd, Milwaukee 53223 | (414) 778-0031 |
| Surveying Associates Inc 2554 N 100th St, Milwaukee 53226 | (414) 257-2212 |
| Regional Consulting Engineers 4842 N 88th St, Milwaukee 53225 | (414) 464-4638 |