Trusted Private Investigations in Sacramento, the Bay Area, and All of Northern California

About Bonnington PI

At Bonnington PI, we believe the pursuit of truth is both a responsibility and a craft. Whether you're dealing with a complex legal dispute or a deeply personal matter, our team is here to bring clarity through discreet, ethical, and professional investigations. Based in Sacramento, CA, we serve clients throughout the Greater Sacramento Valley, San Francisco Bay Area, and Northern California—delivering results you can rely on.

About Timothy Bonnington

Licensed Private Investigator | Qualified Manager | Founder, Bonnington PI

Timothy Bonnington’s path to becoming a licensed private investigator began while attending the University of Mississippi. During breaks and summers back in his hometown of Sacramento, he worked alongside seasoned investigators at one of the region’s most respected firms—gaining rare, early hands-on experience in the field.


By the time Tim decided to pursue private investigation full-time, he had already accumulated over Seven years of real-world investigative work, ranging from infidelity and missing persons cases to surveillance and theft investigations. Those early cases sparked a deep passion for uncovering the truth and helping people find resolution during life’s most uncertain moments.


Driven by that passion, Tim successfully completed the rigorous requirements of the California State Private Investigator licensing process, earning both his Private Investigator License and his designation as a Qualified Manager. Today, he brings a meticulous eye for detail, a results-driven mindset, and a deeply empathetic approach to every case.


“Client communication and confidentiality are everything,” Tim often says. “This work requires trust—and we never take that lightly.”

Why Clients Choose Bonnington PI

When you hire Bonnington PI, you’re not just hiring a service—you’re hiring a licensed professional who takes your concerns seriously. We operate with the highest standards of integrity, confidentiality, and legal compliance. Every case is tailored to your goals, handled with care, and backed by actionable, court-ready evidence.


Clients count on us for:

5 years to 7 years of real-world investigative experience

BSIS-licensed and insured professionals

Transparent pricing and case planning

Detailed reporting with timestamps and visuals

Total discretion and legal compliance

Compassionate client care from start to finish

What We Investigate

At Bonnington PI, we offer a full suite of investigative services to support individuals, attorneys, insurance companies, and businesses. Every service is carried out with discretion, professionalism, and precision.


Key Services Include:

Infidelity Investigations

Child Custody Investigations

Workers’ Compensation Investigations

Cohabitation / Spousal Support Modification

Process Serving

Background Checks

Civil and Criminal Case Support

Bug Sweeping / Technical Surveillance Countermeasures (TSCM)

Digital Surveillance and Online Behavior Monitoring

Polygraph Coordination and Referrals

Covert Surveillance

A Local Investigator With Northern California Roots

We proudly serve clients throughout:

  • Sacramento (Home Office)
  • San Francisco
  • Folsom, Elk Grove, Roseville
  • Bay Area & East Bay Cities
  • Greater Sacramento Valley
  • All of Northern California

We bring local knowledge, discreet mobility, and the investigative tools needed to adapt to complex urban and suburban environments.


Schedule a Free, Confidential Consultation

Whether you’re facing a sensitive family issue or seeking evidence for a legal case, Bonnington PI is here to help you uncover the truth.

Call us at  (916) 936-7773 or submit a case request online.
Let’s talk about your concerns, options, and how we can help you move forward—
ethically and effectively.