serving Silicon Valley and beyond

Real people.
Remarkable lawyers.

We provide our clients with cost effective, result oriented legal representation of the highest caliber.

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a reputation of excellence

Your Legal Team Since 1990

Sweeney Mason is a full service law firm providing substantially all of the legal services required by small and mid-sized companies and serving the estate planning and probate needs of individuals and families. We provide our clients with cost effective, result oriented legal representation of the highest caliber.

Our success is the result of a reputation for providing superior client service without unwarranted expense. The attorneys in each practice area collaborate to ensure that every client’s needs are served and that lasting client relationships are fostered.

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We work hard to earn your trust — the majority of our clients are referrals.

Your Trusted Legal Team



“I have worked with Sweeney Mason for multiple companies over the past thirty years. I have used the firm to successfully represent my company on construction, labor and employment matters. I highly recommend Sweeney Mason for their expertise and prompt responsiveness.”

Brad Thompson

CFO | WeSTCo Iron Works

“Sweeney Mason has provided HR legal advice for our company for over 15 years. Roger’s advice has kept us out of trouble and saved us money. He is great to talk with, and to think with, and can explain the legal issues involved in easy-to-understand English. I would recommend Roger to anyone needing his services.”

Michael "MJ" Yaholkovsky

President, Visible Innovations Group and San Jose Awning

“I first discovered Sweeney Mason at a construction
collection seminar over twenty years ago. Since then, I have continuously used the firm to represent my company on construction and employment matters. I highly recommend Sweeney Mason as a knowledgeable and respected law firm.”

Mike Curran

CEO | Red Top Electric

“Sweeney Mason has performed great work for the Billy Jones Wildcat Railroad including overseeing all human resource documents and information for our employees and staff.”

Peter Panacy

Former CEO, Billy Jones Wildcat Railroad

“If you are in need of a good Trust attorney, look no further! Stuart is wonderful....very personable, thorough and responds quickly to any issues. I feel very fortunate to have him looking out for my interests.”

Teri P

Estate Planning, Trusts and Probate

“I called upon Sweeney Mason for advice and counsel regarding a myriad of HR and related issues. Roger demonstrated excellent functional expertise and knowledge, and I appreciated his very practical and down-to-earth approach to resolution of issues. I have recommended, and continue to recommend, Roger as a great resource and a solid partner in business.”

Guadalupe Lechuga, Juris Doctor

Former Director of Human Resources, SJSU Research Foundation

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For direct contact to one of our attorneys, please visit our team page.  

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