| Business | Phone |
| Sperlich Consulting 821 1/2 Columbus St, Rapid City 57701 | (605) 721-4040 |
| Design Advantage 4882 Avenue A, Rapid City 57703 | (605) 393-1171 |
| Dream Design Intl Inc 528 Kansas City St # 4, Rapid City 57701 | (605) 348-0538 |
| Renner & Assoc 616 6th St, Rapid City 57701 | (605) 721-7310 |
| Professional Land Art Assoc 2219 7th Ave, Rapid City 57702 | (605) 343-2151 |
| Project Solutions 1818 W Fulton St # 101, Rapid City 57702 | (605) 737-0377 |
| Ferber Engineering Co 729 E Watertown St, Rapid City 57701 | (605) 343-3311 |
| Fmg Engineering 3700 Sturgis Rd, Rapid City 57702 | (605) 342-4105 |
| Hydrotech Engineering 3115 Stockade Dr, Rapid City 57702 | (605) 348-2109 |
| Martin Group Inc 5301 S Highway 16, Rapid City 57701 | (605) 399-1062 |
| Kadrmas Lee & Jackson 330 Knollwood Dr # A, Rapid City 57701 | (605) 721-5553 |