Best Private Investigators in Ontario, CA

Private Investigators Ready to Help

Sort
  • PI Services

    Glendale, CA · JD Stone Agency

    This detective agency has been providing investigative services since 2002. They do background checks, cheating spouse and wrongful death investigations, serial claims, and more.

    4/5 stars 9 reviews · 8 credentials · $35-75 / hour · Licensed in CA

  • Legal Services

    Beverly Hills, CA · Brignac Paralegal Contracting Services, LLC.

    Do a background check and clear the doubt by hiring this company's investigative services. These private investigators also provide legal research and consultations, and more.

    6 credentials

  • Private Investigation Services & Fugitive Recovery

    Los Angeles, CA · U.N.I.T. 07 / Archer Investigations

    Hire private investigators from U.N.I.T.07 / Archer Investigations. They have a combined 25 years experience in investigations. They do background checks, security services consulting, and more.

    5/5 stars 2 reviews · 5 credentials · $50-150 / hour

  • Private Investigator & Registered Process Server

    Santa Ana, CA · New Technologies Investigative Services

    New Technologies Investigative Services handles all types of registered process server and private investigator jobs. They take care of small claims, civil documents, and more.

    4 credentials · $85-150 / hour · Licensed in CA

  • Security & Investigations

    Beverly Hills, CA · SIB Investigations

    SIB Investigations is a licensed private detective company that has been offering private investigation services, as well as estate and construction security, and workers investigation since 1999.

    3 credentials · $35-75 / hour

  • Professional Private Investigators

    Claremont, CA · O&O Investigations

    This company handles private investigator jobs that include asset searches and locates, background checks and more. Their private eyes use professional-grade equipment to meet your expectations.

    4 credentials · $75 / hour

  • Security Investigation Agency

    Signal Hill, CA · Long Beach ICS of California

    This company is a security investigation agency that offers 24/7 surveillance services. Their private eyes also do background checks and infidelity investigation.

    3 credentials

Why Use Thumbtack?

  • Get introduced to several pros

  • Compare custom quotes

  • See reviews, past work, and more

  • Free to use and hire when ready

Thumbtack in the news

The New York Times The Washington Post Wall Street Journal USA Today
Get started »
Let us introduce you to private investigators.