| Business | Phone |
| Weddle & Assoc Inc 1750 Sw Skyline Blvd # 105, Portland 97221 | (503) 292-8083 |
| W B Wells & Assoc Inc 4230 Ne Fremont St, Portland 97213 | (503) 284-5896 |
| Tom Nelson & Assoc Llc 1001 Se Water Ave # 390, Portland 97214 | (503) 230-1932 |
| Steven Clifford Land Surveyor 8016 Se Taggart St, Portland 97206 | (503) 777-0395 |
| Boundary Locaters 8124 Se Taylor Ct, Portland 97215 | (503) 261-0272 |
| Chase Jones & Assoc Inc 716 Se 11th Ave, Portland 97214 | (503) 228-9844 |
| Reppeto & Assoc 1410 Ne 106th Ave # 100, Portland 97220 | (503) 408-1507 |
| Davis Group 700 N Hayden Island Dr # 180, Portland 97217 | (503) 978-1610 |
| Dispute Resolution Management 321 Sw 4th Ave, Portland 97204 | (503) 224-4600 |
| Ferguson Land Surveying Inc 8124 Se Taylor Ct, Portland 97215 | (503) 408-0601 |
| Global Engineering Land 8925 Se Division St, Portland 97266 | (503) 777-1141 |
| Heritage Surveying 8413 Ne Humboldt St, Portland 97220 | (503) 255-6558 |
| Ming Surveyors Inc 8025 Ne Killingsworth St, Portland 97218 | (503) 257-9015 |
| Marx Associates Inc 18615 E Burnside St, Portland 97233 | (503) 667-5550 |