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Stone Investigation Services
“He can think outside the box, but also capable of patience meticulous investigation.”
Best Private Investigators near Fontana, CA
1 of these agencies is based in Fontana; the others serve Fontana from towns including Riverside (12 mi), Rancho Cucamonga (6 mi) and Orange (29 mi).
2 open 24/7 · 10 open weekends · 20 rated 4.5+ · 11 show a license
Data verified October 18, 2026
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Bosco Legal Services
- Asset
- Company
- Job
“After our lousy attorney refused to provide and file necessary paperwork with the court after he was paid his legal fees, Our estate was left unrepresented.”
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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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LP Solutions Private Investigators
“Court proceedings can be a very stressful and sometimes overwhelming, but adding Denise to your team can help alleviate your worries because she is such a great asset.”
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RJN Investigations
“Extremely knowledgeable, pointed me in the right direction.”
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GET BIT Investigations
The 24 agencies on this page are the private investigators listed for Fontana, 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: Fontana, CA
22 of the 24 agencies on this page have a rating, from 3.9 to 5.0 across 200 reviews; 1 has 50 or more reviews and 20 are rated 4.5 or higher. 2 are open around the clock; 10 are open on Saturdays and 4 on Sundays. 11 show a license on their websites and 1 has a BBB rating of A or A+. 15 have ten or more years of experience, the longest 40 years. 2 offer urgent consultations; 1 offers remote or virtual consultations; 8 offer a free initial consultation and 2 are family- or locally-owned. 2 have Spanish-speaking staff. We have a website on file for 19 of the agencies on this page; 15 publish a contact page and 10 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 Fontana describe their work online?
19 of the 24 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.
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Ci&s Investigations
“The results were beyond expected and due to the diligence and investigative methods of CIS investigation firm I was able to present the findings to the court in my favor winning me sole custody of my child.”
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Pyrocop
“Called for sprinkler products, which they don't sell, but unlike most other places I called, he used his expertise answering a few questions and helped me find them.”
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Fugitive Recovery Agent
“No fuss”
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Pac Rim Investigative Services Group
“Good people”
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Integrity Legal Support Services
- Documents
“If the clerk rejects the filing, Trent will call our firm, let us know whats wrong, and stay until were able to fix that problem so we can meet our deadline.”
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XPD Investigations
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Joe Mar Polygraph & Investigation Services
“And Highly recommended to Anyone that needs Accurate Results.”
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Michael Whedon Investigations
“He is my father-in-law .”
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Gonzalez Exclusive Invstgtv
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Ron Farris Investigations
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Streamline Investigations
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All Cases Investigative Services
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Kurk Investigative Group
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Peterson Investigations
- Feel
- Matter
- Investigative
“The answer to that question as it relates to Peterson Investigations is not only an emphatic "yes, I would," but also a deeply grateful "yes, I already have and will continue to do so without the slightest hesitation!”
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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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Topcopper Investigative Services
“He also told me about a software tool that would help with capturing info off of my phone for use in court.”
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Southern California Private Investigations
“Farzin and his team were a pleasure to work with during a very stressful legal case and difficult time.”
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Discreet Services
“Very responsive, quality work product”
Private Detective Services in Fontana, CA Cost Estimates
Minimum cost
$367
Maximum cost
$11600
National Average
$1466
Avg Per Hour Rates
$153
$855
$2442
Typical price range is based on 499 cost profiles
Why these companies made our list
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