Thomas Michael Maas

PRO

Thomas Michael Maas

5.0
Rating: 9.0

Licensed for 28 years

Criminal defense Lawyer at Vallejo, CA
Practice Areas: Criminal Defense, DUI & DWI, Child Abuse

521 Georgia Street, Vallejo, CA

About Thomas

Biography

Practice Areas

3

Practice Areas

Criminal Defense 80%

28 years | 750 cases

80%
Child Abuse 10%

28 years | 25 cases

10%
DUI and DWI 10%

28 years | 35 cases

10%

Fees and Rates

Cost

Retainer

Sometimes


Payment Methods

  • Cash
  • Check
  • Credit Card

Licenses

Licensed in California for 28 years

State: California

Acquired: 1998

Active

No misconduct found

Location

Maas and Russo

521 Georgia Street, Vallejo, CA, 94590

maascriminaldefense.com

Online Presence

Other places you can find Thomas online.

Thomas Michael Maas's Reviews

Avvo Review Score

5.0 /5.0

17 Client Reviews

Filter Avvo Reviews (17) Refine reviews to match your needs. Use the filters to quickly surface reviews that align with your case or priorities.

Showing 1 - 5 of 10 reviews | Case Results

Posted by Ben | September 16, 2025

Highly recommend!

“I had an excellent experience working with Maas and Russo. From the very beginning, they were professional, responsive, and communicative. They always took the time to explain the process clearly and made sure I understood all of my options. What impressed me most was how dedicated they were — they ...worked tirelessly to achieve the best possible outcome for my situation. I truly felt supported every step of the way. I am very grateful for their hard work and expertise, and I would highly recommend Maas and Russo to anyone in need of knowledgeable and reliable representation.”

Posted by anonymous | May 11, 2022 | Hired Attorney | Criminal Defense

Expert Representation

It is difficult to put into words just how terrifying the potential for state prison is when facing your very first run-in with the law. I was lost, with absolutely no idea what to do. I hired a lawyer, who turned out to be a nightmare, and when I went to replace him, good fortune smiled on me when I... found Maas and Russo. I met with Thomas Maas, who did not treat me like a piece of garbage; he treated me with respect, compassion, empathy, and a determination to do all he could to help me. I hired him on the spot, and it was the smartest thing I have probably ever done in my life. He was very communicative throughout the process, explaining things to me clearly and concisely. He never sugar-coated anything, always explaining things in a way where I was left with a realistic, grounded view of the situation, yet also cautious optimism for the potential of a favorable outcome. Thomas Maas advised me to hire a forensics expert to look into my case, and I believe that the combination of Mr. Maas' abilities and demeanor, coupled with a very favorable report to the court by the expert, was the reason the prosecutor decided to drop the case. The process took a year and a half, but the sense of relief over the outcome is truly overwhelming. I can't imagine anyone who could ever match Thomas Maas for intelligence, compassion, and professional excellence. Words will never be able to fully express my sincere gratitude.

Posted by Steven Smithson | January 19, 2022 | Hired Attorney | Criminal Defense

Best lawyer in the bay area

I hired Thomas mass out of all the lawyers in the Bay Area. I was looking for a lawyer I could trust my life with. I’ve hired lawyers before and got played out of my money with no positive results. Mr. mass took genuine care of my case and kept me updated through out the entire process. The charges w...ere dropped thank god!

Posted by Mario | April 07, 2017 | Hired Attorney | DUI & DWI

Thank you Stacey!! And the mass team!!

I hire mass law office to handle my dui case out of Solano county this dui happened 4 years ago. I thought the district attorney never filed the case but i was wrong I had a warrant for my arrest I contacted mass law firm to handle my case and my lawyer Stacey Barrett was the one that took on my cas...e and today after 7 months of her going to court fighting for my rights she got it dismissed! Theirs no words to explain how caring and professional she is since day one she showed compassion even tho i never meet her in person because I live in Orange county ca I felt i was in good hands threw this whole process. Thank you Stacey for everything you did for me my son my wife and myself will always be in debt with you! Thank you mass team for everything thank you!!

Posted by Alison | February 02, 2017 | Hired Attorney | DUI & DWI

Sharp, Diligent, Kind, Respected

Tom is very knowledgeable about DUI defense and diligent in reviewing and evaluating his client's case. He is strategic in navigating the court and the DMV from the beginning to achieve the best possible outcome for his client. He is also clearly respected by other officers of the court. When he sa...w a possible defense in my case, he pursued it tirelessly - which of course took a lot of additional time but with no additional cost to the flat fee I paid (worth every penny). Tom patiently explained the possible outcomes with blunt honesty. He was already pursuing the best sentence options for me when he defensed the case! He did not stop there, but pursued an acquittal so that I could get my driving privileges restored right away. Through all of this, his staff was very patient and kind with my frequent, stressed-out calls and questions. I hope you don't need a criminal defense attorney, but I have no reservations in recommending this group to handle your case.

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Thomas Michael Maas's Lawyer Endorsements

Endorse Thomas
Boris Bindman headshot
Boris Bindman

Criminal defense lawyer | Jul 21

Relationship: Worked for lawyer

"Thomas Maas is a recognized expert in Criminal Defense. His knowledge of the law and skill in the courtroom are second to none. As one former client aptly put it, "he's the 800-pound gorilla in the room.""

Jeffrey L. Mendelman headshot
Jeffrey Mendelman

Criminal defense lawyer | Apr 08

Relationship: Fellow lawyer in community

"I endorse this lawyer. Mr. Maas is a zealous, effective, diligent, and compassionate advocate."

Laina Teresa Chikhani headshot
Laina Chikhani

Criminal defense lawyer | Jul 20

Relationship: Fellow lawyer in community

"I endorse this lawyer."

David Carl Beyersdorf headshot
David Beyersdorf

Criminal defense lawyer | Nov 10

Relationship: Fellow lawyer in community

"I endorse this lawyer."

Jessica Loy Agnich headshot
Jessica Agnich

Criminal defense lawyer | Apr 17

Relationship: Fellow lawyer in community

"I endorse this lawyer."

View All Endorsements
Boris Bindman headshot
Boris Bindman

Criminal defense lawyer

Jeffrey L. Mendelman headshot
Jeffrey Mendelman

Criminal defense lawyer

Laina Teresa Chikhani headshot
Laina Chikhani

Criminal defense lawyer

Experience

Rating:  9.0 (Superb)

Honors

2015

Peer Review Rated, Martindale-Hubbell

2010

Rising Star, Super Lawyers

2009

Rising Star, SuperLawyers

Work Experience

1998 - 2007

Public Defender, Solano County Conflict Defender

1998 - 1998

Associate General Counsel, Law Offices of Louis Katz

Associations

California Public Defenders Association

Member

MAAS Law Offices

Attorney

2005 - 2008

California Attorneys for Criminal Justice

Board of Directors

Education

1997

Golden Gate University School of Law

JD - Juris Doctor

1993

University of Iowa

BA - Bachelor of Arts

Speaking Engagements

2007

Solano Public Defender Felony Training

Felony Sentencing

2006

Solano Public Defender Felony Training

Three Strikes Law

Languages

English

Activity

Avvo Rating

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Avvo Rating Levels
10.0 - 9.0 Superb8.9 - 8.0 Excellent7.9 - 7.0 Very Good6.9 - 6.0 Good5.9 - 5.0 Average4.9 - 4.0 Concern3.9 - 3.0 Caution2.9 - 2.0 Strong Caution1.9 - 1.0 Extreme Caution