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Elevate Investigations
- Background Check
- Information
“She provided a professional, caring, and comfortable experience throughout the whole process.”
Best Private Investigators near Fullerton, CA
3 of these agencies are based in Fullerton; the others serve Fullerton from towns including Orange (8 mi), Santa Ana (11 mi) and Tustin (13 mi).
7 open 24/7 · 16 open weekends · 22 rated 4.5+ · 10 show a license
Data verified October 16, 2026
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Logic Investigations
“He is professional, great at communicating and Thorough.”
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EJM Digital
“We also provide Tools, Resources, Consultations And Investigations To Probation, Parole, Police, Sheriff and other Law Enforcement personnel worldwide to protect our greatest resources, our families and citizens.”
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Blue Systems International
- PI
- Restraining Order
- Background Checks
“Michael completed his investigation, the information relayed to me was done with sensitivity and keeping in mind the human emotions regarding the information, because my situation was sensitive.”
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Peterson Investigations
- Team
- Job
- Information
“With a track record that speaks volumes about their commitment to excellence, Peterson Investigations has earned a reputation as the go-to agency for individuals and businesses seeking trustworthy and effective investigative solutions.”
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Confidential Controls - Private Investigator
- Price
- Results
- Information
“This report had critical information that helped a legal case I was fighting, and because I got the report so fast, it made me less stressed and relieved.”
The 24 agencies on this page are the private investigators listed for Fullerton, 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: Fullerton, CA
23 of the 24 agencies on this page have a rating, from 4.3 to 5.0 across 485 reviews; 2 have 50 or more reviews and 22 are rated 4.5 or higher. The topics that come up most in reviews of the agencies on this page are "communication", "efficient" and "expertise". 7 are open around the clock; 15 are open on Saturdays and 13 on Sundays. 10 show a license on their websites and 3 have a BBB rating of A or A+. 17 have ten or more years of experience, the longest 46 years. 7 offer urgent consultations; 9 offer a free initial consultation and 1 lists coupons or special offers. 1 has Spanish-speaking staff. We have a website on file for all 24 of the agencies on this page; 20 publish a contact page and 20 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.
Why are investigation agencies outside Fullerton shown here?
3 of the 24 agencies have an address in Fullerton. The others come from other towns. Investigators travel to the subject, so an office one county over is rarely the issue. State licensing is the thing to check.
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Brapga Security Systems
- Thanks to Them
- Company
- Supervisor
“I called a few days ago and spoke with Santos, he gave me good information, he was interested in an event service, he explained its security structure very well and finally we reached an agreement, the day of the event arrived and I was satisfied.”
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Breakpoint Investigations
- Efficient
- Company
- Job
“For instance, if you know details about someone's personality, schedule, location, and circumstances, she will lawfully adapt to meet the need in a way that is safe and effective for proper legal service.”
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JPL Process Service
- Efficient
- Priced
“Really appreciated the aftercare when the recipient of the documents tried to dispute the service, JPL continued to support and the court ultimately found that service had been completed properly.”
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DBM Private Investigator
- Expertise
- Information
- Prices
“Moreover, Derrick maintained clear communication and kept me informed every step of the way, which greatly eased my concerns and assured me that my case was in capable hands.”
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Lockjaw Legal Process Services
- Company
“Now I understand "LOCKJAW" they wont stop until the job is done.”
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Gomez Investigations Unit- Detective Privado
“Whether you're going through a divorce, suspect a cheating spouse of infidelity, need a background check, or any need for investigations, Nestor and his well experienced team will go above and beyond to help you.”
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Excaliber Investigations
“Reliable, trustworthy and highly recommended investigated service.”
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Southern California Private Investigations
“I recommend Southern California Private Investigations Inc 100%”
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Tag Force Security & Patrol Services
“This company is so great the supervisor is someone who will do the most for you and asks for a tiny return just show up and do your job I am so greatful and so blessed to be there thank you Tagforce”
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Oeis Private Investigation
- Informative
“Maybe a suggestion is provide more resources in class for students to take home and use or study(handouts, websites, etc) probably just knitpicking but just an area for feedback.”
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Schubert Investigations
- Expert
- Expectations
- Know
“I would like to thank him individually and the entire company for delivering such outstanding and professional service for their clients and know that this brief review cannot encompass the full experience of being helped when so many other people ha...”
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Discreet Services
“Very responsive, quality work product”
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Justice Solutions Group
- Background Checks
- Team
- Results
“They're one of those groups that's much more competent than you expect but due to confidentiality agreements they can't expand on the depth of some of the services they provide as well as their A-list clients”
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R.H. Young
- Process Server
“I can say without reservation that NTIS has been the most responsive to my needs and they have provided affidavits admissible in court to prove that we did our due diligence in notifying the tenants, thus protecting our clients and their estates.”
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OC Confidential Investigations
“Her rates are very reasonable and she went above and beyond what was expected to fulfill the task which wasn't easy because she was dealing with slippery people.”
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Vision Security Consultants
“With today's growing security concerns, there is no better time to ensure that you have the best protection available. We will provide you with a free evaluation of your security and the safety of your business or family.”
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Galilean Investigations
“This investigation company did an excellent job they operate very fast and have a high level of professionalism!”
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AIB
“POV: You Searched This”
Private Detective Services in Fullerton, CA Cost Estimates
Minimum cost
$359
Maximum cost
$11357
National Average
$1435
Avg Per Hour Rates
$150
$837
$2391
Average price range is based on 388 cost profiles
Why these companies made our list
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