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Practice areas


  1. Domestic Violence: 20%
  2. Family: 20%
  3. Divorce & Separation: 20%
  4. Child Support: 20%
  5. Child Custody: 20%


Payment types:

Cash, Check, Credit card

Attorney endorsements

9 total 

Are you an attorney? Endorse this lawyer

  • Doreen Beth Boxer

    Mark Irwin and I shared a common client a few years ago, and our cases shared some common issues. From this experience I can say that Mark is a zealous advocate for his clients, and truly cares about them as people. He is thorough, knowledgeable, and dependable. I have also referred cases to Mark and those clients have been very happy with Mark's work on their cases. I am happy to endorse this lawyer.


    Doreen Boxer Criminal Defense Attorney
    Relationship: Worked together on matter

  • Jennifer E. Lefton

    I whole-heartedly endorse Mark Irwin. Mark is a compassionate attorney who works incredibly diligently for his clients. He always tries to resolve his clients issues as expediently as possible without aggravating an already tense situation. That demeanor is much more effective with the courts. He's one of the good guys and we need more attorney's like him.


    Jennifer Lefton Estate Planning Attorney
    Relationship: Worked together on matter

Contact info

Law Offices of Irwin & Irwin, LLP

1400 North Harbor Boulevard
Suite 570
Fullerton, CA, 92835


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Witikin Awards for Academic Excellence (3)Western State University - College of Law2008
Randall Gaston Community Service AwardCity of Anaheim2006
Lifesaving AwardAnaheim Police Department1998
Work experience
TitleCompany nameDuration
Attorney/PartnerIrwin & Irwin, LLP2011 - Present
Member - Executive Advisory CommitteeOCFJC Foundation, Inc.2009 - Present
SergeantAnaheim Police Department1990 - Present
Associate AttorneyWishart & Garland2010 - 2011
Vice-PresidentOCFJC Foundation, Inc.2006 - 2009
Member - Steering CommitteeOrange County Family Violence Council2004 - 2009
AuditorPOST Sherman Block Supervisory Leadership Institute (SBSLI)2000 - 2002
Police OfficerGarden Grove Police Department1986 - 1990
Association namePosition nameDuration
State Bar of CaliforniaMember2010 - Present
State Bar of California, Family Law SectionMember2010 - Present
Orange County Bar Association, Family Law SectionMember2010 - Present
Western State University College of Law Alumni AssociationMember2009 - Present
American Bar AssociationMember2005 - Present
Orange County Bar AssociationMember2005 - Present
University of Southern California Alumni AssociationMember1986 - Present
School nameMajorDegreeGraduated
Western State University College of LawLawJD - Juris Doctor2009
University of Southern CaliforniaCommunicationsBA - Bachelor of Arts1986
California State University, Long BeachN/AN/AN/A