Paramount Investigative Services
- Law Firm
- Information
These agencies serve Paramount from nearby bases in towns including Los Angeles, Beverly Hills and West Covina.
24 agencies listed · 6 open 24/7 · 19 open weekends · 21 rated 4.5+ · 9 show a license
Data verified October 15, 2026
The 24 agencies on this page are the private investigators listed for Paramount, 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.

The 24 agencies on this page are rated from 4.2 to 5.0 across 836 reviews; 4 have 50 or more reviews and 21 are rated 4.5 or higher. When clients rate these agencies on specific qualities, they most often praise professionalism (95%), responsiveness (95%) and quality (89%). The topics that come up most in reviews of the agencies on this page are "results", "communication" and "efficient". 6 are open around the clock; 19 are open on Saturdays and 16 on Sundays. The services the agencies on this page list most often on their websites are surveillance (4), background checks (3), missing persons (3), child custody investigations (2) and insurance fraud (2). 9 show a license on their websites and 5 have a BBB rating of A or A+. Domain records put 18 websites of the agencies on this page at ten or more years old; the oldest dates from 1996. 6 offer urgent consultations and 7 offer a free initial consultation. 2 have Spanish-speaking staff. We have a website on file for all 24 of the agencies on this page; 20 publish a contact page; 15 list a public email and 1 takes bookings online. We count these figures across the agencies on this page; hours and prices change, so confirm the details with the agency before you book.
7 of the 24 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.