Northwest Investigations & Consulting
- Results
- Company
- PI
3 of these agencies are based in Portland; the others serve Portland from towns including Vancouver, WA (7 mi), Lake Oswego (9 mi) and Clackamas (9 mi).
5 open 24/7 · 12 open weekends · 17 rated 4.5+ · 8 show a license
Data verified October 21, 2026
The 24 agencies on this page are the private investigators listed for Portland, OR. What each one states about its license, its specialties and the areas it covers comes from its own website; ratings and quotes come from public reviews.

20 of the 24 agencies on this page have a rating, from 3.8 to 5.0 across 269 reviews; 2 have 50 or more reviews and 17 are rated 4.5 or higher. When clients rate these agencies on specific qualities, they most often praise responsiveness (96%), professionalism (93%) and value (82%). The topics that come up most in reviews of the agencies on this page are "communication" and "results". 5 are open around the clock; 12 are open on Saturdays and 9 on Sundays. The services the agencies on this page list most often on their websites are private investigation (3), background checks (2) and small claims (2). 8 show a license on their websites and 2 have a BBB rating of A or A+. 14 have ten or more years of experience, the longest 34 years. 5 offer urgent consultations and 6 offer a free initial consultation. We have a website on file for 23 of the agencies on this page; 19 publish a contact page and 20 list a public email. We count these figures across the agencies on this page; distances are straight-line, and hours and prices change, so confirm the details with the agency before you book.
3 of the 24 agencies have an address in Portland. The others come from other towns. Investigators travel to the subject, so an office one county over is rarely the issue. State licensing is the thing to check.