Whitestar Group
“They look and act professionally, they are attentive and a partner in creating a successful, safe environment for my guests.”
Best Private Investigators in Santa Rosa, CA
10 agencies listed · 6 in Santa Rosa · 2 open 24/7 · 5 open weekends · 5 rated 4.5+
Data verified October 18, 2026
Armorous Private Security
“Armorous is a great company to work with they value your opinion and suggestions when it's needed.”
Patriot Investigations
“I would definitely use this company again, also would refer to any business or friends.”
SRS Private Investigations
“Ed delivers timely, thorough reports, and does a great job communicating the status of each report.”
Bay Area Background Checks
Premier Investigations
The 10 agencies on this page are the private investigators listed for Santa Rosa, CA. What each one states about its license, its specialties and the areas it covers comes from its own website; ratings and quotes come from public reviews.
Area overview: Santa Rosa, CA
6 of the 10 agencies we list are based in Santa Rosa; the other 4 serve Santa Rosa from towns including Healdsburg (3 mi), Windsor (9 mi) and Angwin (17 mi). 8 of the agencies on this page have a rating, from 4.0 to 5.0 across 87 reviews; 5 are rated 4.5 or higher. 2 are open around the clock and 5 are open on weekends. 3 show a license on their websites. Domain records put 5 websites of the agencies on this page at ten or more years old; the oldest dates from 2003. 2 offer urgent consultations and 3 offer a free initial consultation. We have a website on file for 9 of the agencies on this page; 7 publish a contact page and 6 list a public email. We count these figures across the agencies on this page; distances are straight-line, and hours and prices change, so confirm the details with the agency before you book.
Which investigators listed for Santa Rosa describe their work online?
9 of the 10 agencies on this page have a website on file. Those pages are where an agency states its license, the kinds of investigation it takes on, and whether it works mainly for attorneys, for companies or for private clients. That last point changes how a report gets written.
Pena Investigations
“They provided exactly what I needed, and when I needed their services on short notice, they came through for me.”
Skip Trace Investigations
Code 3 Consultations
Dawn To Dawn Investigations
Why these companies made our list
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