Whitestar Group
“I have hired Whitestar Group for several delicate and complex matters, and I am thoroughly impressed with the exceptional service they provide.”
Best Private Investigators near Petaluma, CA
These agencies serve Petaluma from nearby bases in towns including Santa Rosa, Healdsburg and Napa.
10 agencies listed · 5 open 24/7 · 6 open weekends · 7 rated 4.5+ · 3 show a license
Data verified October 16, 2026
Patriot Investigations
“I would definitely use this company again, also would refer to any business or friends.”
Skip Trace Investigations
SRS Private Investigations
“He gathered our information and without hesitation helped us more then anyone else has.”
Marin Private Investigations
“He handled it with finesse and was very professional to work with.”
Andrew Price Investigations
“To sum this up whatever your private investigations needs may be you should rest assured that Andrew Price will provide you with the best that professional services in this area can provide.”
The 10 agencies on this page are the private investigators listed for Petaluma, 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: Petaluma, CA
9 of the 10 agencies on this page have a rating, from 4.3 to 5.0 across 62 reviews; 7 are rated 4.5 or higher. 5 are open around the clock and 6 are open on weekends. 3 show a license on their websites. Domain records put 6 websites of the agencies on this page at ten or more years old; the oldest dates from 2003. 5 offer urgent consultations; 1 offers remote or virtual consultations; 3 offer a free initial consultation and 1 is family- or locally-owned. We have a website on file for 9 of the agencies on this page; 5 publish a contact page and 3 list a public email. We count these figures across the agencies on this page; hours and prices change, so confirm the details with the agency before you book.
Do investigators listed for Petaluma discuss a case free?
3 of the 10 agencies state that a first consultation costs nothing. Use it to describe the problem and hear whether the work can be done lawfully at all. A straight agency will sometimes tell you on that call that what you want cannot be obtained, which saves you a retainer.
Dawn To Dawn Investigations
Verity Investigative Group
“He was a fantastic resource, one that I will happily recommend to anyone in need of his services.”
Bay Area Background Checks
Premier Investigations
Why these companies made our list
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