JPL Process Service
“Jeff and his team were completely professional from the first phone call, to the email notification that the process service was done.”
Best Private Investigators near Westminster, CA
1 of these agencies is based in Westminster; the others serve Westminster from towns including Santa Ana (7 mi), Orange (10 mi) and Tustin (11 mi).
3 open 24/7 · 10 open weekends · 14 rated 4.5+ · 6 show a license
Data verified October 18, 2026
Blue Systems International
“As attorneys we are pleased to highly recommend Blue Systems International private investigation services.”
Peterson Investigations
“Eric Peterson from Peterson Investigations is the firewall you need to insulate you from those who might not have your best interests at heart.”
DBM Private Investigator
“Derek T is very communicative, concise, professional and always there when I had a question or needed a response.”
Lockjaw Legal Process Services
“You couldn't have a better person on your side !!”
Gomez Investigations Unit- Detective Privado
“They went above and beyond to answer all my questions and went over all the finding with me.”
The 15 agencies on this page are the private investigators listed for Westminster, 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: Westminster, CA
The 15 agencies on this page are rated from 4.3 to 5.0 across 282 reviews; 1 has 50 or more reviews and 14 are rated 4.5 or higher. The topics that come up most in reviews of the agencies on this page are "communication" and "expertise". 3 are open around the clock; 9 are open on Saturdays and 7 on Sundays. 6 show a license on their websites and 1 has a BBB rating of A or A+. 10 have ten or more years of experience, the longest 34 years. 3 offer urgent consultations; 6 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 15 of the agencies on this page; 14 publish a contact page and 14 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 Westminster describe their work online?
All 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.
Southern California Private Investigations
“Farzin and his team were a pleasure to work with during a very stressful legal case and difficult time.”
Oeis Private Investigation
“Very informative and professional, they were also able to do my live scan after my class ..”
Discreet Services
Justice Solutions Group
“They were speedy, efficient, and they were clear with me on communication throughout the process.”
Allen Investigations, Debra Allen
“All I had was a few stories, a common first and last name, approximate year of birth and after only 6 months, she did what no other investigator could do, she found my family!”
R.H. Young
“There are so many process servers out there, but you don't know if they will just attempt to serve and still be unsuccessful; with Rob we don't have this problem because he is not only diligent but innovative in figuring out how to serve the opposing party.”
C Jackson Investigations
“Very happy with the service and the price.”
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Elevate Investigations
“All the information we received was accurate and she was a pleasure to work with.”
Threat Management and Protection
Why these companies made our list
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