| Business | Phone |
| Ace Investation Vancouver 98660 | (360) 433-1609 |
| Behavioral Forensics & Invest 4225 Ne St James Rd 260, Vancouver 98663 | (360) 694-5212 |
| Bri Group/Marosi Group 11805 Ne 99th St 1300, Vancouver 98682 | (360) 253-4151 |
| Byler's Spec Investigations Vancouver 98684 | (360) 798-0030 |
| Chris Peterson Investigations 1211 Daniels St, Vancouver 98660 | (360) 993-4010 |
| Clark County Investigations Po Box 5661, Vancouver 98668 | (360) 696-1452 |
| Discovery Investigation 1308 Nw 86th St, Vancouver 98665 | (360) 574-7546 |
| Eye On You Investigations 1104 Main St, Vancouver 98660 | (360) 260-0236 |
| Legal Resources-Investigations Vancouver 98662 | (360) 944-5511 |
| Reality Check 9413 Ne 70th St, Vancouver 98662 | (360) 882-8464 |
| Shannon Detective Svc Inc Vancouver 98665 | (360) 574-0202 |