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Matthew Steven Colliss

Family Attorney at Walnut Creek, CA

5.0   2 reviews
  • Licensed for 9 years
    State CA
    Acquired 2014
    Active No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Matthew

Learn Matthew’s areas of practice.

Practice areas
  1. Family
    Family law encompasses the whole spectrum of related matters including divorce, parentage, child custody, child support, spousal support, arrearages, property division, home sales or buyout provisions, valuation of businesses, etc. You may come to an attorney for one specific issue, such as custody, but soon will learn that upon filing for divorce, all issues are on the table and must be addressed. It is important to be prepared and understand your rights. Schedule a consultation today.

    10 years

  2. Child custody
    Whether you are trying to establish your initial custody and visitation orders or trying to modify a standing arrangement, this is one of the most personal and stressful issues facing parents. I can assist you with filing your paperwork, preparing you for mediation, and advocate on your behalf in the courtroom.

    10 years

  3. Divorce and separation
    Divorce can be a stressful and overwhelming experience. Its easy to get frustrated and confused in the complicated court process. Whether you have reached an agreement with your spouse, or are not able to agree on anything, I am here to move you through this process as quickly and painlessly as possible. I am commited to both your legal and emotional needs during this difficult time.

    10 years

  4. Child support
    There are many benefits to relying on an attorney for assistance in child and spousal support. California law requires that both parents contribute to the support of their children and in doing so there are several factors to consider when calculating support. I look forward to assisting you in obtaining the most favorable result regarding child or spousal support obligations no matter if you’re the payor or the payee.

    10 years

  5. Debt collection

    10 years

Born and raised in the East Bay Area, I knew I wanted to be an attorney from an early age.  I have been hooked on the advocacy aspect of litigation from my first experiences working in law offices as early as 2004.  I feel very fortunate to have the opportunity to do what I love daily. My favorite part of my job is earning my client's trust and building strong relationships with them.  My clients find comfort knowing that I will be there to assist them through what may be the most difficult period of their life.  I am a father of two young boys and hope to teach them that with focus and hard work, anything is achievable.


Law Office of Matthew S. Colliss
1299 Newell Hill Place, Suite 300
Walnut Creek, CA, 94596

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5.0 / 5.0
  2 customer reviews
5 Star
4 Star
3 Star
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1 Star
Posted by Sabina | July 2, 2018
This review is from a potential client who consulted with this attorney.
| Consulted Attorney
Positive and personable attorney in the midst of chaos
The first thing you will notice from talking to Matt is that he is empathetic to your problems, respects your point of view, and advocates for your position. His metier is not the most uplifting but he keeps everything even-keeled. In addition, he educates other people on what he does, what is the best outcome among various options. I highly recommend his professionalism, his advocacy and his humor!
Read less
Posted by Jen | October 4, 2016
This review is from a person who hired this attorney.
| Hired Attorney
High Integrity
Matt has truly been a lifesaver. I came to him at a time when I desperately needed legal advice. He was prompt, timely and most importantly, he was more interested in giving me guidance to address my issues then increasing his bottom line.


  • Retainer Sometimes
Payment methods
Cash, Check, Credit Card


AVVO RATING 9.8 (Superb)

Work Experience

  • Owner
  • Law Office of Matthew S. Colliss
  • 2016 - Present
  • Adjunct Professor
  • John F. Kennedy School Of Law
  • 2016 - Present
  • Associate Attorney
  • Blum Gibbs & Davies, LLP
  • 2014 - 2016
  • Paralegal
  • Blum Gibbs & Davies LLP
  • 2006 - 2014
  • Legal assistant
  • Hartnett Smith and Associates
  • 2004 - 2006
View all work experience


  • Golden Gate Univ SOL
  • JD - Juris Doctor
  • 2014
  • California St Univ Hayward
  • BA - Bachelor of Arts
  • 2009
  • University of California - Berkeley
  • Paralegal Certificate
  • 2006


  • Contra Costa County Bar Association, Barristers/Young Lawyers Section
  • Officer
  • 2016 - Present
  • Entrepreneurs of NorCal
  • Member
  • 2016 - Present
  • Contra Costa County Bar Association, Barristers/Young Lawyers Section
  • Board of Directors
  • 2015 - Present
  • Alameda County Bar Association, Family Law Section
  • Member
  • 2014 - Present
  • Contra Costa County Bar Association, Family Law Section
  • Member
  • 2014 - Present
View all associations

Languages Spoken

  • English

Honors and Awards

  • Rising Star
  • SuperLawyers
  • 2020
  • Rising Star
  • SuperLawyers
  • 2019
  • Rising Star
  • Super Lawyers
  • 2018
  • Excellence For the Future Award - Family Law Practice
  • CALI
  • 2013
  • Excellence For the Future Award - Lawyering: Social Change
  • CALI
  • 2011
View all awards

Speaking Engagements

  • CCCBA Ethics Series
  • Ethics and Entrepreneurialism
  • 2016

Attorney endorsements

Received (3)
Given (3)
Endorse Matthew
Family Attorney | May 13
Relationship: Fellow lawyer in community
"Matt is a go-getter and advocates strongly for his clients!"
Family Attorney | Jul 06
Relationship: Fellow lawyer in community
"Matthew is extremely knowledgeable and resourceful. He brings excellent qualifications to the practice of family law. I endorse this lawyer."
Family Attorney | Apr 18
Relationship: Fellow lawyer in community
"Matthew is a fantastic lawyer who handles delicate client matters with diligence, candor, and confidence. I regularly refer friends, family, and colleagues to Matthew for their family law needs. I endorse this lawyer."
Estate planning
Estate planning
Estate planning

Avvo Contributions

This attorney hasn't created any legal answers in Q&A or legal guides recently on Avvo.

Walnut Creek Family Lawyer Matthew Steven Colliss
Matthew Steven Colliss
Family Attorney
Walnut Creek, CA
Licensed for 9 years