About The Firm

We are a three attorney office with three very experienced paralegals. Our size allows us to offer highly expert legal advice and execution, combined with caring counsel to help clients through difficult life situations.


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Dan J. Hall, Attorney

Mr. Hall is a Certified Specialist in Estate Planning, Probate and Trust Law by the California State Board of Legal Specialization.

 He has received the highest possible rating of “AV” from Martindale-Hubbell, a firm that has been rating lawyers for over a century for both legal ability and adherence to ethical standards, based on confidential peer review.

Dan started his private practice in 1992 and represents clients with wide ranges of net worth and a variety of backgrounds. Before beginning his private practice he was a tax partner in the San Francisco office of Coopers & Lybrand (now Price Waterhouse Coopers) a national CPA firm. There he served as Director of Personal Financial Services for the firm’s Western Region of the U.S.

Dan has spoken on estate planning and tax related topics to many different audiences including groups of attorneys, CPAs, and financial professionals. He is the past president of the Eastern Alameda County Bar Association and the Tri-Valley Estate Planning Council. He holds a degree in Political Science from Brigham Young University and received his law degree from the University of Houston. In addition to his law degree and license to practice law in the state of California, he has been licensed as a Certified Public Accountant by the state of Texas.

Dan and his wife, Kathlyn, are long time Pleasanton residents and each of their 6 children is a graduate of the Pleasanton school system.


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Michael J. Hall, Attorney

Mr. Hall’s practice is concentrated on estate planning, wills, trusts, estate administration, probate, trust administration, and tax planning.

Mike joined the firm as a summer law clerk in 2004, and full time in August 2009. He holds a degree in Business Management from Utah Valley University and a Juris Doctor degree from Whittier Law School.

Mike’s family moved to Pleasanton when he was two years old, and after attending Pleasanton schools he graduated from Foothill High School in 2000. His wife, Laura, also grew up in Pleasanton and attended Amador Valley High School. Mike and his wife have four children, Abigail, Emma, Blake, and Logan.

His hobbies include snowboarding, running, baseball, basketball, softball, and golf.


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William D. Wollesen, Attorney

Mr. Wollesen’s practice is concentrated on estate planning, wills, trusts, business planning, and family office services.

Will joined the firm in January, 2016.  He holds a Bachelor of Science in Finance from the Marriott School of Management at Brigham Young University and a Juris Doctor with a High Tech Law Certificate Award from Santa Clara University.

Will has spent over a decade advising Silicon Valley company founders and executives with their personal and business needs.  He has played varying roles in this effort, including portfolio manager, project manager, CFO and General Counsel.

Will is a licensed attorney in the State of California and is fluent in Spanish.  Will grew up in the south bay and his wife, Brooke, grew up in Pleasanton and graduated from Amador Valley High School.  Will and his wife have four children, Daenen, Davis, Haley and Sadie.

His hobbies include running, skiing, tennis, soccer, golf and boating.