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About me

Ms. Brost started her professional career in nursing, and continued to military social work. She has worked as a family counselor, drug/alcohol specialist, and Guardian ad Litem. With over 25 years of experience as a family law attorney, she is an experienced litigator of cases involving significant assets and/or serious allegations of abuse. She utilizes her broad base of knowledge and experience to obtain successful outcomes for her clients and their families.


Languages spoken: German

Practice areas


  1. Divorce: 50%
    25 years
  2. Child Custody: 25%
    25 years
  3. Child Support: 14%
    25 years
  4. Alimony: 10%
    25 years
  5. Adoption: 1%
    25 years



Hourly ($280-320/hour)

Payment types:

Cash, Check, Credit card

Attorney endorsements

2 total 

Are you an attorney? Endorse this lawyer

  • Jamie Anna Olivares

    I endorse this lawyer. She is a great attorney and a great person as well.


    Jamie Olivares Social security Attorney
    Relationship: Fellow lawyer in community

  • Joshua Nihan Foreman

    It is a pleasure to endorse Margaret Brost. She changed Washington family law when she successfully appealed a client's case all the way to our state's Supreme Court; that took brains, guts, energy, dedication, hard work -- everything you want in a lawyer. She had the whole family law establishment against her and she beat them single-handed. If you want a lawyer who is a proven winner, call Margaret Brost.


    Joshua Foreman Child custody Attorney
    Relationship: Fellow lawyer in community

Contact info

Brost Law, PC

1800 Cooper Point Road SW Suite 18
Olympia, WA, 98502


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Preeminent 5.0 out of 5Martindale-Hubbell2015
Work experience
TitleCompany nameDuration
AttorneyBrost Law, PC1991 - Present
AttorneyMargaret Brost, Attorney1991 - 1991
Law ClerkHon. Gerry Alexander, Court of Appeals (Division II)1990 - 1991
Legal ExternHon. Robert J. Bryant, US District Court1989 - 1989
Legal Intern-Civil Division and Legal Extern-Fraud DivisionKing County Prosecutor1988 - 1990
Security/Data Admin, Asst Staff Mgr, SupervisorMountain Bell Telephone1978 - 1987
Team LeaderBernallillo Alcoholism Treatment Program1977 - 1978
Psychiatric Social WorkerUnited States Army1974 - 1977
Association namePosition nameDuration
Eastern District Court of WashingtonMember1995 - Present
Eastern District Court of WashingtonN/A1991 - Present
American Bar AssociationMember1991 - Present
Washington State Bar AssociationMember1991 - Present
Washington Women LawyersMemberN/A
Monarch Children'N/AN/A
Thurston County Bar AssociationMemberN/A
Stop the ViolenceBoard Member1996 - 1998
Harlequin ProductionsSecretary1995 - 1999
Monarch Children's CenterBoard Member1995 - 1997
Harlequin Theater ProductionsBoard Member1993 - 2003
United WayAllocations Committee Member1991 - 1994
Extended Hand (Romanian Orphan Relief and Adoption)Legal Counsel1991 - 1994
Legal cases
Case nameOutcome
In Re: Marriage of FreemanWe made law! The Washington Supreme Court adopted the New Jersey standard articulated in Carfagno (Carfagno v. Carfagno, 288 N.J. Super. 424, 672 A.2d 751(Ch. Div. 1995)) as a framework for modifying or terminating a permanent protection order.
See all legal cases 
School nameMajorDegreeGraduated
University of Texas System, DallasProfessional and Executive CoachingGraduate School Certificate2010
University of Puget Sound School of LawLawJD - Juris Doctor1990
University of CaliforniaCounselingM.S. Ed.1976
Nazareth CollegeBehavioral ScienceBA - Bachelor of Arts1974
Speaking engagements
Conference nameTitleDate
Pacific Legal Technology ConferenceSelf Help Divorce2003