| Business | Phone |
| Ervin K Nowak Real Estate 6015 Briarclift Ct, Greendale 53129 | (414) 423-1212 |
| Dci Contractors 6951 Industrial Loop, Greendale 53129 | (414) 762-7800 |
| Erdmann Construction Co Inc 6601 Northway B, Greendale 53129 | (414) 421-3100 |
| Garuda Contractors Inc 4504 Skylark Ln, Greendale 53129 | (414) 423-5556 |