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Sean E Armstrong

Sean E Armstrong

Practice areas:

Divorce & Separation, Mediation, Litigation

Practice Areas

Licensed since 2001

  1. Divorce & Separation: 75%
    12 years
  2. Mediation: 15%
    4 years
  3. Litigation: 10%
    14 years


Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

9 total 

  • Stephanie F Wilson

    I have had the pleasure of working with Sean on a number of cases. He is one of few attorneys who puts jockeying aside and identifies the real issues at hand. This no-nonsense approach to cases saves both of our clients' time and money, as well as the stress associated with a long-drawn out legal proceeding. I highly recommend him.


    Stephanie Wilson Family Attorney
    Relationship: Opposing Counsel on matter

  • Ryan M Johnson

    Sean is an outstanding attorney and an outstanding individual. He has a no-nonsense and honest approach to resolving cases. His hard work and willingness to reach out to others in the legal community have helped establish him as a highly respected attorney.


    Ryan Johnson Divorce & Separation Attorney
    Relationship: Fellow lawyer in community

Contact Info

Garrett, Hemann, Robertson, P.C.

1011 Commercial NE #210
PO Box 749
Salem, OR, 97308-0749




Professional Misconduct

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

Avvo Contributions

Legal Answers


Award NameGrantorDate Granted
Pro Bono Lawyer of the YearMarion County Bar Association2012
AV RatingMartindale-Hubbell2011

Work Experience

TitleCompany NameDuration
ShareholderGarrett Hemann Robertson PC2004 - Present
Law ClerkMultmonah County District Attorney's Office2000 - 2001
Law ClerkAlexandria Commonwealth's Attorney1998 - 1999
Police OfficerAlexandria Police Department1994 - 2000


Association NamePosition NameDuration
Marion County Bar AssociationPresident2011 - 2012
Oregon State Bar Association, Family Law SectionExecutive Committee2009 - 2012
Marion County Family Law Advisory CommitteeMember2009 - 2012
Marion County Bar AssociationBoard Member2007 - 2012
Oregon State Bar AssociationMember2001 - Present
Willamette Valley American Inn of CourtMemberN/A

Legal Cases

Case NameOutcome
Custody ModificationCustody to Father after a three day trial

See all Legal Cases 


Publication NameTitleDate
Marion County Bar BulletinSome Thoughts for New Lawyers...2009


School NameMajorDegreeGraduated
George Mason University School of LawLawJD - Juris Doctor2001
College of William and MaryN/ABA - Bachelor of Arts1992

Speaking Engagements

Conference NameTitleDate
Oregon Family LawDeposition Techniques and Traps2014
Annual LuncheonEstate Planning Issues in Family Law2008