Mountain Investigations
“Worked hard and communicated well, found our stolen family car.”
Best Private Investigators in Vancouver, WA
14 agencies listed · 6 in Vancouver · 3 open 24/7 · 7 open weekends · 11 rated 4.5+
Data verified October 18, 2026
Northwest Corporate Investigations
Snoops Investigating
“Really appreciated how prompt and professional they were in communicating and completing the time sensitive job ON TIME.”
Investigative Solutions
“This company was born here out of necessity to pursue truth and has the roots to serve this county and entire pdx area far better than others you'll find.”
Mold Investigations
Westfall Investigations
“I hope I don't need a process server again, but Westfall Investigations will be my first call if I ever do.”
The 14 agencies on this page are the private investigators listed for Vancouver, WA. 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.
Area overview: Vancouver, WA
6 of the 14 agencies we list are based in Vancouver; the other 8 serve Vancouver from towns including Portland, OR (7 mi), Gresham, OR (12 mi) and Milwaukie, OR (14 mi). 13 of the agencies on this page have a rating, from 3.0 to 5.0 across 186 reviews; 1 has 50 or more reviews and 11 are rated 4.5 or higher. 3 are open around the clock; 7 are open on Saturdays and 6 on Sundays. 7 show a license on their websites and 2 have a BBB rating of A or A+. 10 have ten or more years of experience, the longest 34 years. 3 offer urgent consultations and 4 offer a free initial consultation. We have a website on file for 13 of the agencies on this page; 10 publish a contact page and 10 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.
Do investigators listed for Vancouver discuss a case free?
4 of the 14 agencies state that a first consultation costs nothing. Use it to describe the problem and hear whether the work can be done lawfully at all. A straight agency will sometimes tell you on that call that what you want cannot be obtained, which saves you a retainer.
PI Services
“Mark and his team have always been quick, efficient, and kept me in the loop as things progressed - which in turn meant I could timely update my own clients!”
Northwest Investigations & Consulting
“Steve went above and beyond to help me obtain the insight I needed, so I could have true confidence in the information I needed to make a sound decision.”
Diligent Investigations
“Robert at Diligent Investigations went above and beyond, putting in lots of time researching, communicating, and eventually providing the served papers to the defendant for a very fair price.”
Portland Private Investigators
“Very helpful, needed to find a family member”
Babnick and Associates
“ George Babnick helped with my situation which was resolved in my favor due to his efforts and assistance.”
Complete Screening Agency
“Friendly staff with quick and accurate results.”
BLI Investigations
“I've used this company and was more than pleased with their professionalism and results.”
Internal Affairs Private Investigations
Why these companies made our list
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