| Business | Phone |
| Caswell/Hertel Surveyors Inc 6150 Sw 124th Ave, Beaverton 97008 | (503) 644-3179 |
| David W Mills Consulting 14315 Sw Cougar Ridge Dr, Beaverton 97008 | (503) 590-7158 |
| Finley Engineering 1800 Nw 169th Pl # B250, Beaverton 97006 | (503) 466-9460 |
| G & L Land Surveying Inc 8116 Sw Nimbus Ave, Beaverton 97008 | (503) 641-0308 |
| Northwest Surveying 17175 Sw Tualatin Valley Hwy, Beaverton 97006 | (503) 848-2127 |
| Griffin Land Surveying 13225 Sw Cottontail Ln, Beaverton 97008 | (503) 579-8503 |