Washington
| Company | Category | Area | Address | Web | Contact person | |
| NORTHSTONE REAL ESTATE | Real Estate Agt,Mgr | Washington | PO BOX 490, ORTING, Pierce, Washington, 98360-0490, USA | - | - | DON DARDEN |
| NORTHSTONE REAL ESTATE INC | Subdividers & Devel | Washington | 1495 NW GILMAN BLVD, ISSAQUAH, King, Washington, 98027-8975, USA | - | - | BRIAN LEAVITT |
| NORTHSTREAM | Subdividers & Devel | Washington | 720 4TH AVE STE 102, KIRKLAND, King, Washington, 98033-8136, USA | - | - | KIM BENTZ |