| Business | Phone |
| Designs By David Po Box 1117, Richland 99352 | (509) 366-3045 |
| Designs By David 462 Palm Dr, Richland 99352 | (509) 627-0285 |
| Dillman-Luvaas Architects 660 Symons St, Richland 99354 | (509) 946-4189 |
| Integrated Design 660 George Washington Way C, Richland 99352 | (509) 946-2386 |
| James B Stenkamp 315 Spokane St, Richland 99354 | (509) 371-8087 |