Lisa L.
9/6/2025
This is a great family owned country have your taxes done. They are very kind, friendly and super supportive.
O'Sullivan & Associates
Closed
(4)
3650 Mt Diablo Blvd Ste 105
Lafayette, CA 94549
O'Sullivan & Associates is a licensed accounting firm based in Lafayette, CA, offering a comprehensive range of services tailored to business owners, executives, and independent professionals. Known for their affordability, expertise, and friendly approach, the firm prioritizes secure and responsible financial management for their clients.
With a strong focus on asset protection, business performance, and tax efficiency, O'Sullivan & Associates provides personalized services that include QuickBooks support and professional consultation. Their commitment to safety is reflected in their Client Portal, which features 14 layers of security to protect client data.
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Reviews
5.04 reviews
Tara S.
11/25/2019
Tom helped me with complex taxes. He patiently met with me over weekends and evenings, the only times I was free from work obligations repeatedly to have them completed. He was always on time and...
Fran G.
2/6/2014
For years, Tom O'Sullivan has been handling our incomes taxes, and we couldn't be happier. He takes great care in preparing and filing our taxes to ensure the highest quality of work. He has gone...
Jeanie U.
2/12/2014
I too was a long time client of Bill's and was sorry to see him retire... but my experience with Tom and his family last year was excellent and I just made an appointment for this Saturday to...
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