Sonoma County Private Investigator

Professional Private Investigator Services in Sonoma County, CA

We provide professional private investigation services to the San Francisco North Bay, including Sonoma County.  Santa Rosa, the county seat of Sonoma County is 39 minutes from our office.

Sonoma County Investigation Services:

Our operatives know Sonoma County well and conduct investigations throughout the county, from civil investigations and interviews to criminal cases, scene investigations and surveillance.

  • Surveillance
  • Employee Theft, Business Theft Case, Vandalism
  • Cheating Spouse, boyfriend, girlfriend, husband, wife, Infidelity, Marital Infidelity
  • Background Checks & Records Research
  • Family Law, Divorce, spousal support
  • Child Support and Child Custody Investigation, Surveillance during Child Visitation
  • Corporate Investigation: Employee or Business Partner investigation and surveillance
  • Workers Comp, Fraud Injury Claims, Disability, Personal Injury
  • Witness Location, Find Missing Person, Runaway Child or Teen
  • Service of Process

Contact us for a case strategy recommendation.

Filley and Associates

1537 4th Street, Suite 136
San Rafael, CA 94901


Sonoma County Map
Sonoma County Map
Do you cover all of Sonoma County?

Yes. Our office in San Rafael serves all of Sonoma County from Petaluma to Santa Rosa, Cloverdale, Cotati, Healdsburg, Rohnert Park, Sebastopol, Windsor, Bodega, Cazadero, Forestville, Fort Ross, Geyserville, Glen Ellen, Guerneville, Jenner, Oakmont, Occidental, Penngrove and Wikiup.

Interesting fact about “Sonoma”…

The Miwok and Pomo tribes of California used the word Tso-noma, meaning “The Valley of the Moon,” to reference the area between the current locations of Santa Rosa and Sonoma. Early Spanish settlers adapted the place name phonetically, using the more customary spelling, “Sonoma”.