San Francisco Private Investigator

Professional Investigations in the SF Bay Area – 1-415-462-1631

Our San Francisco private investigator firm provides cost efficient, aggressive, results oriented investigation services. We are uniquely qualified to provide the range of services required of an investigative firm in today’s environment. Our staff of professional investigators know the Bay Area inside and out. Our years of experience and our connections are an integral part of our success.

We approach each case the same way… what do you need and what is the best strategy to achieve your goals.  Our strategy for your case depends on what is important to you… time constraints, priorities, budget.  We will find a solution that best suits your situation and needs.

Our staff is composed of highly qualified investigators, who have excellent people and organizational skills. We find that many cases require not only a thorough investigation, but organizational insight and abilities as well. Filley and Associates has that in-depth knowledge to provide thorough and reliable investigative services to corporations, financial institutions, law firms, insurance companies, and consumers worldwide. We handle direct, hands-on investigation and major case management. We use effective tools and information systems to enhance the investigative process.

Contact us for a free consultation.

San Francisco Investigation Office

Our San Francisco office is centrally located to cover the Bay Area.  Besides San Francisco, this office covers the Peninsula, Silicon Valley, the East Bay, Oakland, Alameda and the South Bay.  Our staff includes Mandarin Chinese speaking investigators, Cantonese Chinese speaking investigators and Spanish speaking investigators.

For investigations in San Francisco and the San Francisco Bay Area, call us at 415-462-1631 or email us at  We also provide detective services outside of the SF Bay Area, in other states and countries (subject to local licensing laws)

Marin Investigation Office

Our office in San Rafael covers Marin, Sonoma, Mendocino, Lake, Napa and surrounding counties.  We are located minutes from the Marin County Court House in San Rafael.  We are also close to Oakland and the East Bay, via the Richmond – San Rafael bridge.

If you are looking for a Marin private investigator for investigation services in the San Francisco North and East Bay Area, call us for a free consultation at 415-462-1621 or email us at

California Investigation

We provide detective services in the San Francisco Bay Area and California wide.  If you are looking for a California private investigator, call us to talk about how we can help.  We often handle cases in Southern California / Los Angeles area.  Our proficiency in Spanish, Mandarin and Cantonese means that we are often the best choice for investigations throughout California.

Chinese Language Investigations


If you need a Chinese speaking San Francisco private investigator, to conduct interviews and investigations in Mandarin or Cantonese, please contact us to discuss case strategy. Investigations conducted in the witness’ native tongue are much more effective.  To discuss a Chinese language case in the SF Bay Area, please Contact Us.