Best Private Investigators near Pomona, CA
These agencies serve Pomona from nearby bases in towns including Glendora, West Covina and Rancho Cucamonga.
15 agencies listed · 2 open 24/7 · 8 open weekends · 10 rated 4.5+ · 6 show a license
Data verified October 18, 2026
Excaliber Investigations
Tag Force Security & Patrol Services
Schubert Investigations
Pyrocop
A Pineda Polygraph Services
The 15 agencies on this page are the private investigators listed for Pomona, CA. 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: Pomona, CA
12 of the 15 agencies on this page have a rating, from 3.9 to 5.0 across 85 reviews; 10 are rated 4.5 or higher. 2 are open around the clock; 8 are open on Saturdays and 5 on Sundays. 6 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 62 years. 2 offer urgent consultations and 1 offers a free initial consultation. We have a website on file for 14 of the agencies on this page; 8 publish a contact page and 7 list a public email. We count these figures across the agencies on this page; hours and prices change, so confirm the details with the agency before you book.
Which investigators listed for Pomona describe their work online?
14 of the 15 agencies on this page have a website on file. Those pages are where an agency states its license, the kinds of investigation it takes on, and whether it works mainly for attorneys, for companies or for private clients. That last point changes how a report gets written.