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San Diego Private Investigators

Browse these private investigators with great ratings from Thumbtack customers in San Diego.

Top Pro
Guardian Investigations
from 24 reviews
  • 22 years in business
  • 47 hires on Thumbtack
  • Top Pro on Thumbtack
Stephanie W.
Verified review

My experience with Guardian Investigations was far better than I could have ever hoped for. I had a defendant I believed would be extremely difficult to serve in a timely manner as she is known to hide from anyone she suspects is "out to get her." I anticipated many attempts and even the possibility that a stake out might be necessary in order to accomplish service. Much to my amazement, Peter managed to serve the defendant on his very first try. I was stunned and extremely relieved that it was done so quickly. Peter Barranco was very responsive to my needs. He provided a quote for his services promptly. He met with me at the time we agreed to meet and was right on time. His fee was very reasonable, especially in light of the difficulties I anticipated he would encounter accomplishing service on this defendant. I was more than happy to pay him for his services. Peter was professional and understanding and did everything he said he would do. Plus, he's just a nice guy - very easy to talk to. I would highly recommend Peter Barranco and Guardian Investigations to anyone in need of his services. Thanks, Peter!! Stephanie

  • 25 years in business
  • 5 hires on Thumbtack
Tom M.
Verified review

This man is the best background and assets investigator I have ever known. I am a fellow private investigator who specializes is worker's compensation fraud, and Mr. Hamilton is my go-to guy for background and assets search investigations. Again, simply the best.

  • 11 years in business
  • 5 hires on Thumbtack
Jamie B.
Verified review

I used Nick as part of my divorce case to do a co-habitation investigation (essentially to prove that my soon to be ex-wife was already living with her boyfriend - which was the reason for our divorce). Being able to demonstrate this would allow me to significantly reduce or eliminate my spousal support obligation. Nick came highly recommended by several attorneys that I had interviewed and he lived up to my high expectations in every way. Nick was creative in how we approached the case, collaborated with me in every way that I desired, kept me abreast of what was going on, and was very detailed. I really enjoyed working with Nick and appreciated how he was always helping me find ways of approaching the case that would keep my costs down. He is not one of those shady private investigators which I appreciated because if someone is willing to break the law for you, then I would question how much you could trust hiring them to represent you. I would absolutely recommend using Bradley Investigative Services.

La Barbara Investigations
from 3 reviews
  • 14 years in business
Omar K.
Verified review

Dinnell is a great private investigator, she was professional and kept me informed. Thank you for your hard work.

Rick Taylor
from 1 review
  • 2 hires on Thumbtack
Beverly B.
Verified review

Taylor an Taylor Investigations solved a very difficult issue in my life. Without getting into details, these are the only investigators I will ever use.

  • 5 years in business
  • 1 hire on Thumbtack
Alexandra G.
Verified review

I highly recommend Alex Smit at Crane & Gold Security. He is doing an outstanding job, he's professional and honest. Five stars.

  • 26 years in business
  • 2 hires on Thumbtack
Dawn C.
Verified review

E.B. helped me find the person in question and avoid a great deal of unnecessary research. He provided prompt, excellent service, even when my information was flawed. They will definitely be my go-to investigators from now on!

  • 11 years in business

Private Investigator licensed in California and Arizona I'm able to follow subjects across state lines from CA to AZ or AZ to CA and back due to being licensed in both states.


Confidence Investigations offers a wide range of services. No matter what the situation is, call us because we have many affiliations that enable us to help in areas that are not necessarily listed here. * standard/routine service of process * rush service of process * stake outs * skip tracing * P.O. forwarding address search * notary public * workers compensation investigations * covert/undercover operations * surveillance and counter surveillance to include all domestic matters * criminal investigations * civil investigations * trial preparation * missing persons investigations * asset searches * electronic vehicle tracking * electronic monitoring and countermeasures * interviews and interrogation services * background investigations * pre-employment investigations




My license number is 28656. I am located in Monrovia and we perform all types of investigation services including, but not limited to, the following: Subrosa, recorded statements, civil, criminal and private individual.


This company is owned by a Veteran and employs veterans as well.



I have 25 years' experience in all types of private investigations. If I can't help you, I know someone who can.


We are a California based professional private investigative agency with capabilities to complete assignments throughout the United States. Our investigations include asset investigations, background checks, domestic investigations, fraud investigations, locating missing persons, locating records, and, of course, surveillance investigations. We provide process service to our clients as well. We are serving all legal documents throughout California and the United States. Our staff will also assist with preparation and service of all small claims files.


We offer complete litigation support from the start. Able Legal Investigations is a part of your case from the very beginning, helping you prepare for court with asset searches and potential recovery analysis, discovery and production consulting, electronic discovery services, and pre-litigation witness interviews. Our computer forensic investigators, senior investigators, forensic accountants, certified fraud examiners and other professionals are also experienced expert witnesses and can testify in a variety of civil matters.


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Licensed Private Investigator specializing in background searches, hard to locate witnesses, biological parents, siblings & family members, beneficiaries & heirs, etc.

  • 8 years in business
  • 3 hires on Thumbtack

Professionalism and ethics. There are some in this service field that skirt the laws - I don't. If something is illegal to do I will let you know up front. I am very good at investigating, but I do so within the parameters of the law.


Based in San Diego and convenient to Del Mar and Rancho Santa Fe, Able Legal Investigations provides investigative services to businesses and individuals throughout the United States and locally to Los Angeles, Orange County, and elsewhere in Southern California. Our licensed private investigators conduct all forms of civil, criminal, surveillance and other investigations including family law and divorce, personal injury, and insurance fraud, along with background investigations and asset searches. Able Legal Investigations specializes in complex local, national and international investigations and thorough, in-depth due diligence support.

  • 20 years in business

RDI’s global leadership in the investigation arena is founded on a 14 year record of delivering business results to clients worldwide. Our mission is to put investigations to work in practical cost efficient ways.

Q & A

Answers to commonly asked questions from the experts on Thumbtack.

What does a private investigator do?

First and foremost, good private investigators follow laws. Unlike on TV, they don’t break in windows or hack into hospital computer systems to get you intel. When you hire a private investigator, you’re hiring a professional to gather facts and find information for you. Although they can’t obtain certain information (such as health records), they do have access to information that most civilians do not. Often private investigators are hired to perform surveillance or background checks or investigate cases such as adultery, child custody, missing persons, hidden assets, or debugging, and theft or other crimes.

Private investigators can be hired to interview people and provide that information to the client, perform photo or video surveillance, monitor activity at a location where you suspect criminal activities or questionable behavior, track a person’s movements, find missing people, do deep-dive background checks, and more. Private investigation can be helpful if you’re trying to get a court order but need evidence. Private investigators can also help find birth parents. Nationally, the average price range for private investigation is $70-$210 per hour.

What does a private investigator cost?

Private investigation isn’t just for blockbuster action movies. Hiring a private investigator can help in all kinds of situations ranging from finding a birth parent to improving personal security. Nationally, the average price range for private investigation is $70-$210, although pricing often hovers between $40 and $100 depending on the complexity of the services you need. Where you live in the country will affect your costs for private investigation; larger cities have higher business overhead and a higher cost of living, which in turn means higher service rates. The complexity of your case can also affect cost. A basic background check may have a flat rate, while hiring a private investigator to help with your child custody case may require more legwork and research, and therefore cost more. Some private investigators work on retainer. A retainer is essentially a nonrefundable deposit you pay to the professional — meaning you have retained their services — who then works against that amount. Here are some examples of average private investigation costs:

  • Hourly rate: $60-$70; costs can vary based on current fuel prices.
  • Flat rate: $100 for comprehensive background investigation services.
  • Retainer: $1,500 minimum retainer required by some pros before starting work.

Actual Requests

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Need a Private Investigator

Corona, CA

  • Case type
  • Details
    he will be flying in to fort lauderdale , florida on april 11th i want to see who picks him up and their interactions.
  • $80
    Average price
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