Diamond Bar, CA181 Private Investigators near you

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Diamond Bar Private Investigators

Browse these private investigators with great ratings from Thumbtack customers in Diamond Bar.

Luis Orellana Investigations
4.6
from 27 reviews
  • 12 years in business
  • 75 hires on Thumbtack
Ennio F.
Verified review

He is very good at what he does and I recommend anyone to him who needs Private Investigative work!

National Intelligence Group
4.4
from 20 reviews
  • 19 years in business
  • 23 hires on Thumbtack
Chris L.
Verified review

I was iffy about hiring a private investigator! Mr. Allen walked me through everything and was very professional and helpful. He knew what he was talking about how I should go about everything.. he's the guy you wanna hire hands down :)

  • 7 years in business
  • 19 hires on Thumbtack
Sydni T.
Verified review

John got into contact with me immediately and performed great, accurate service and was very friendly, professional, and helpful. Highly recommend him as a private investigative resource that is cost effective.

La Paz Research Group
4.6
from 16 reviews
  • 22 years in business
  • 23 hires on Thumbtack
Sonia R.
Verified review

I called La Paz to have them do some surveillance. Once I explained why and what I wanted, they told me they could interview the people instead of costly surveillance. The investigator sent me a report that had the information I needed. I'm glad I had La Paz Research Group help me. That was money well spent.

  • 4 years in business
  • 25 hires on Thumbtack
Gilbert R.
Verified review

I initially chose to use Jim Black at Fidelis Investigative & Security Services out of a number of potential process servers for his prompt response to my inquiry through Thumbtack and other sources. I found his reasonable fee schedule to be superior to the others for a simple service of a Small Claims Summons. After he served my Summons within hours of retaining his services, I was quite please and impressed with his services and would recommend him and his firm to others.

  • 6 years in business
  • 38 hires on Thumbtack
Li J.
Verified review

All communications from APG were immediate, clear and professional -- this was very reassuring. The security guard assigned to man the door for our private party came on time, and was very nice.

Top Pro
WIS
5.0
from 12 reviews
  • 29 years in business
  • 12 hires on Thumbtack
  • Top Pro on Thumbtack
Mark M.
Verified review

I retained WIS to conduct a delicate social media investigation. I had an immediate response, a tailored outcome that included a thorough analysis. All the contact I had was directly with the principal, and he was fantastic at explaining the process and alerting me to the realistic outcomes that I could expect to receive. I consequently had realistic expectations - and before I actually paid for anything - about what might be possible. I did not ultiamtely find everything I wanted but it was very clear indeed that WIS went well beyond the extra mile to help me, left no stone unturned in researching the issue and looking for an answer. As an example of going beyond the extra mile, WIS kept on the matter after sending me the report that I had paid for and voluntarily provided me with an update report that did contain additional useful information. Who else would stay on the case like that? I doubt it is industry practice, but it is the way WIS actually did things for me. I found WIS very polite, very responsive, very quick, very thorough and totally objective. I would have no hesitation in recommending WIS, and I personally will not waste a second looking elsewhere if I ever needed work of the sort WIS does to be done for me. It was an excellent experience, and good value for money as well.

A.N. Investigations
5.0
from 10 reviews
    Paul S.
    Verified review

    A.N. Investigations is a reliable, reputable and professional resource for private investigative services you can count on to allocate truth, reliable information, documentation and admissible evidence you'll need to win your case. A.N. Investigations company takes pride in being the premier private investigations and surveillance agency in Los Angeles that took my case seriously, put my mind at ease and assured me that they'll work diligently on bringing my case to a close. A.N private detectives are highly-reputable for conducting swift and thorough investigations and addressing my specific needs in handling my case. A.N. guarantees to perform all services to your satisfaction and in the most cost-effective way possible. In addition, they keep all information obtained disclosed, discreet and secure in order to ensure your safety and confidentiality. When you retain A.N. Investigations for surveillance or service private investigations in Los Angeles, you are employing the BEST in the industry! Rest assured that A.N.'s company of detectives will provide you with the truth and answers that you seek and deserve. Retaining and Employing A.N Investigations was one of the best decisions I have ever made.

    • 2 hires on Thumbtack
    Kelly F.
    Verified review

    Steve Nshanian is an excellent investigator. Very quick to respond to any questions, got the job done in a very efficient, timely manner. Always polite. A very hard worker. I would HIGHLY recommend him. I give him a 10/10! I am very pleased with the outcome!

    • 16 hires on Thumbtack
    Pauldin S.
    Verified review

    Very accurate and to the point investigation . Very timely with the reports. thanks

    • 27 years in business
    Ram M.
    Verified review

    I hired Chameleon to conduct surveillance on a previous employee that I suspected is not injured at all. I am extremely happy with the results that saved me a lot of headaches and saved money to the insurance company.

    • 23 years in business
    • 5 hires on Thumbtack
    Griselda B.
    Verified review

    Moises, was very helpful, he delivered what was promised. He wasn’t pushy. Very professional.

    • 4 years in business
    • 2 hires on Thumbtack
    About

    All cases are confidential and unique. No canned questions will be answered on this site. If you have any questions, feel free to visit our website or contact us directly.

    • 19 years in business
    • 3 hires on Thumbtack
    Will D.
    Verified review

    I hired Joseph Recovery for 2 jobs...1 was to help me find a way to collect on a 2 year old judgement and the other was a family issue(possible cheating spouse) I have tried other companies before with no luck. They handled the family issue fast with photos and video. The judgement work was even better, they found the bank and even knew when to have the Writ delivered so I got all my money. Great company, great service, and great price. Very discreet. 100% recommended. Hope I never need them again but if I do, they will be my first call.

    About

    We have eyes everywhere. We can see what you cannot. We will do what you will not. We get you the answers you need and deserve.

    About

    Best Tracers P.I. is a State of California licensed private investigation agency. We provide many services for attorneys, businesses, and private parties. Our staff has been successfully serving in the Los Angeles, Orange, Riverside, San Bernardino and San Diego counties for over a decade.

    About

    Only the best qualified professionals used. Not the cheapest...the best! Get the results you need.

    • 1 hire on Thumbtack
    About

    We are a Los Angeles private investigator who offers a full-service detective agency helping clients worldwide with investigative needs in California and throughout the U.S. For 17 years, we have served the legal, insurance and business communities, as well as private parties.

    • 24 years in business
    About

    We do investigations for the following: * loss prevention * surveillance * employee theft * covert cameras * mystery shopping * loss prevention program * external theft prevention * organized retail crimes * management training * auditing compliance * polygraph examination * background investigations * hospitality * surveillance cameras * integrity shops * criminal investigations * civil investigations * insurance investigations * executive protection * corporate investigations * service of process * attorney Services * spouse investigations * missing person/skip tracing

    About

    I am a licensed private investigator. I do insurance fraud, civil case works, and background checks. I will travel to any location in California.

    • 18 years in business
    About

    I am a private investigator/former police officer with over 23 years of investigative experience. I have appeared on numerous major television shows to discuss cases I have worked. The following are my services: * Background Investigations * Locate Investigations * Criminal Defense * Child Custody Matters * Surveillance * Stalker Mitigation * Motion Picture Technical Advisory

    Hire skilled professionals for absolutely everything.