| Business | Phone |
| Treetop Condominiums 701 Sandy Summit Dr, Ballwin 63021 | (636) 527-2272 |
| Spring Hill Farm Condominums 1477 Whispering Creek Dr, Ballwin 63021 | (636) 825-8827 |
| Hickory Sound Condominium Assn 1030 Alpine Ridge Dr, Ballwin 63021 | (636) 225-7732 |
| Condominium Property Mgmt Inc 242 Old Sulphur Springs Rd, Ballwin 63021 | (636) 227-8688 |