Paramount Investigative Services
“Was absolutely professional and succeeded in helping me attain the information I needed.”
Best Private Investigators in Los Angeles, CA
22 agencies listed · all 22 in Los Angeles · 4 open 24/7 · 16 open weekends · 17 rated 4.5+
Data verified October 21, 2026
Sunset Blvd. Investigations
“Both these people really cared about my ordeal and went above and beyond to help me, and I cannot speak highly enough about the integrity and honesty they both continue to show even when not expecting it.”
Kinsey Investigations
“The team was incredibly empathetic and kept me updated throughout the process, always going the extra mile to address my concerns.”
MCM Investigations
“Thank you from the bottom of my heart.”
Heirfinders Research Associates
“They helped me recover funds lost eight years ago when teaching and working in Hawai'i.”
Dakota Michaels Investigations
“I first hired Dakota for a very personal case and was impressed with his work and the efficiency of DMI.”
The 22 agencies on this page are the private investigators listed for Los Angeles, 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: Los Angeles, CA
All 22 agencies we list here are in Los Angeles itself. 18 of the agencies on this page have a rating, from 4.2 to 5.0 across 348 reviews; 3 have 50 or more reviews and 17 are rated 4.5 or higher. 4 are open around the clock; 15 are open on Saturdays and 15 on Sundays. The services the agencies on this page list most often on their websites are missing persons (3), background checks (2), child custody (2) and surveillance (2). 9 show a license on their websites and 3 have a BBB rating of A or A+. Domain records put 16 websites of the agencies on this page at ten or more years old; the oldest dates from 1995. 4 offer urgent consultations and 8 offer a free initial consultation. We have a website on file for all 22 of the agencies on this page; 19 publish a contact page; 13 list a public email and 2 take 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.
Do investigators listed for Los Angeles discuss a case free?
8 of the 22 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.
Worldwide Intelligence Network
“The circumstances under which I chose to hire this company were stressful and anxious making, but Wincor made me feel at ease by taking on the vigilance of the situation and my safety in their hands.”
Trans West Investigations
Global Polygraph & Security
“This is the place to go if you need a lie detector test.”
Tristar Investigation
“If you're looking for a seasoned expert team that is 100% discreet, honest and ethical, Bruce's team of talented well trained P Is will deliver great results, you will not be disappointed!”
Horizon Investigation | Private Investigator Los Angeles
“She was very thorough and professional, and understood the importance of why we needed the results quickly.”
Investigative Resources International
“I highly recommend that if you are going through this, the money is well spent and they will treat you right.”
Origin Investigations
“Eey professional and go above and beyond what would be expected to get the job done!”
Confidential Matters
“Mustafa is great to work with.”
T T Williams Jr Investigations
“He's my grandpa and I reccomend you go to him because he is awesome”
California Investigative Service
“California investigative Charles has handle two process and serves for me and would definitely recommend”
Hover View Investigations
MSH PI
Cody S Investigations - Los Angeles Private Investigator
U.S Heir Finders
Bureau of Uncommonness
Kessler International
Why these companies made our list
Is this page useful? Yes
No
Is there anything wrong with this page?
