San Jose Detective Agency Inc.

Discreet. Professional. Results You Can Trust.

For nearly three decades we have provided confidential investigative services for attorneys, businesses and individuals throughout San Jose, the South Bay and all of Californa.

  • Licensed & Insured
  • Ca. Lic. PI23494
  • 100% Confidential
1996
Serving Clients Since
100%
Confidential
3,000+
Cases Assisted
Downtown San Jose skyline at night
SDA 30 Years Of Discretion

About Us

Decades of Discretion in Silicon Valley

San Jose Detective Agency Inc. is a professional investigative corporation that has been providing quality, trustworthy, confidential Answers to questions generated by Californians seeking the truth. Sometimes the truth can be dangerous. The San Jose Detectives Executive protection branch provides armed protective services for the public, workplace violence cases, witness protection, armed escorts, domestic violence and any number of other security needs. We have been providing these services to the Bay Area, California. and beyond for the last 25 years.

Ray W. Johnson President C.E.O. and the staff at The Agency have extensive, training and experience as investigators and Executive protection agents. All agents have been meticulously screened and vetted for their positions.

Detective Johnson is the former two term Governor of the California Association of Licensed Investigators. (Silicon Valley District). After graduating from the police Academy in 1996. Detective Johnson choose to continue working in the private sector instead of seeking employment as a police officer. Instead, Due to financial concerns, he started San Jose Detective Agency Inc. and has been the agent in charge to date. All investigations are handled with strict confidentiality and the highest level of professionalism. The agency is licensed and insured well beyond the State required limits.

Office
4750 Almaden Expwy. #124-229
San Jose, Ca. 95118
Telephone
(408) 268-5900
License
Ca. Lic. PI23494

Our Capabilities

Elite Investigative Services

A full spectrum of licensed investigative services, delivered with absolute discretion and documented to a pre-trial preparation standard.

The San Jose Standard

The Standard of Excellence

For nearly three decades we have worked at the intersection of modern surveillance technology and time-tested investigative strategy. We don't just gather information — we secure court-ready evidence with absolute discretion.

  • Licensed Professionals
  • Confidential Investigations
  • Decades of Experience
  • Advanced Surveillance Equipment
  • Trusted by Attorneys
  • Court-Ready Documentation
  • Discreet Communication
  • Fast Response Times
  • Personalized Strategies
  • Unmatched Integrity

Our Process

A Streamlined, Confidential Process

From first contact to final reporting, our methodology ensures complete confidentiality, precision and actionable results.

01

Request a Consultation

Reach out securely to discuss your situation with a licensed investigative professional β€” no obligation.

02

Discuss Your Case

We analyze your needs, outline strategic options and establish clear operational objectives and budget.

03

Investigation Begins

Our experts deploy proven techniques and meticulous field surveillance to gather the crucial facts.

Client Experiences

What Our Clients Say

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"San Jose Detective Agency was very responsive and professional in helping me with my situation. They provided the information I requested in a timely manner and gave helpful advice. They are honest, patient and compassionate. I highly recommend SJDA."

R
R. M.Private Client
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"Ray was extremely helpful, offering both information and advice to help me reach my objective. He spent almost a full hour on the phone and made sure he fully understood every aspect of my matter β€” a straight shooter, honest and knowledgeable."

J
Jeremy W.Private Client
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"They were very quick to respond and provided a number of different paths to take, with varying costs, so I had options to match my budget. The investigator who worked with me was professional and resolved my issue promptly with the desired result."

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RT C.Business Owner
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"Ray helped me with a fraud case. He found all the information that could help us within one day, then made suggestions that were crucial to my discussions with the police. I can't recommend their company highly enough."

M
Mike M.Fraud Case Client
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"Used San Jose Detectives to do a background check on my nanny. I only had limited information but they were still able to do it successfully, and were prompt with the results. Would definitely recommend them to a friend."

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Nicole G.Background Check Client
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"Very helpful and patient. I felt better after talking to them β€” they even explained how I could get the information I needed without hiring a detective."

J
Jackie H.Private Client

Need Answers? Start With a Confidential Consultation.

Speak directly with a licensed investigator about your situation — securely, discreetly and with no obligation.

100% Confidential Β· Secure Process Β· No Obligation

Secure Inquiry

Request a Confidential Consultation

All communications are strictly confidential. Tell us about your situation and a senior investigator will review your case and contact you directly.

Direct Channels

Speak With an Investigator

For the swiftest support, a direct phone call is always welcome.

  • Phone(408) 268-5900
  • Email[email protected]
  • Office4750 Almaden Expressway
    Suite #124-229
    San Jose, CA 95118
  • HoursMon – Sun: 9:00 AM – 9:00 PM
  • LicenseCalifornia PI License No. PI23494
4750 Almaden Expy, San Jose, CA 95118, USA

San Jose Detective Agency, Inc.

Licensed private investigators serving San Jose, Los Gatos, Saratoga, Cupertino, Morgan Hill, Gilroy and the greater Silicon Valley area since 1996.

CONTACT

4750 Almaden Expressway

Suite #124-229

San Jose, CA 95118

(408) 268-5900

[email protected]

HOURS

Mon – Sun: 9:00 AM – 9:00 PM