Best Private Investigators near Glendora, CA
1 of these agencies is based in Glendora; the others serve Glendora from towns including West Covina (7 mi), Claremont (8 mi) and Montclair (10 mi).
3 open 24/7 · 6 open weekends · 5 rated 4.5+ · 4 show a license
Data verified October 16, 2026
California Recovery Investigations
“I would hire them again without hesitation and would recommend them to any of my family and friends.....”
Tag Force Security & Patrol Services
Schubert Investigations
“Don't waste your time and look no further, Freeman is exceptional !”
Joe Mar Polygraph & Investigation Services
“Fred was very good and clear throughout the process and I felt very good about the whole process.”
Fugitive Recovery Agent
The 10 agencies on this page are the private investigators listed for Glendora, 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: Glendora, CA
7 of the 10 agencies on this page have a rating, from 4.3 to 5.0 across 80 reviews; 5 are rated 4.5 or higher. 3 are open around the clock; 6 are open on Saturdays and 5 on Sundays. 4 show a license on their websites and 1 has a BBB rating of A or A+. 5 have ten or more years of experience, the longest 62 years. 3 offer urgent consultations and 2 offer a free initial consultation. We have a website on file for 9 of the agencies on this page; 4 publish a contact page and 3 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.
Which investigators listed for Glendora describe their work online?
9 of the 10 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.
Professional Solutions
PAX Investigations
“Their team went above and beyond to gather crucial information for my case, delivering results promptly and discreetly.”
Cobalt Consulting and Investigations
全美侦探调查 American Professional Investigations
Why these companies made our list
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