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Tristen Une-Jeong Key

also known as Tristen U. Key, Tristen Lee

About Me

Tristen Key practices family law in Snohomish and King Counties. Tristen was well known throughout Washington State as a social worker where she dedicated 10 years of service with several local public agencies before attending law school. Upon graduation, Tristen chose to practice family law as an extension of her social work experience.

Tristen has a winning track record using her keen ability to anticipate the other side's case strategy to stay one step ahead. Her unique ability to be competitive yet reasonable and compassionate makes her a trusted attorney by clients and well respected by her colleagues and the bench. Tristen is known in the community for zealously and diligently advocating for her client's interests. She is never hesitant to take on complex and difficult cases and has many years of experience in the courtroom and with successful results.



Tristen's distinctive approach to clients is to establish a rapport of trust, confidence and candor with clients at the earliest onset to create and accomplish a case strategy for the best possible outcome. Tristen strongly believes in fostering a relationship that allows clients to feel at ease in conveying their hopes, fears and anxieties which can drive a case. She works diligently to keep her clients apprised of all developments in their case so the client may remain proactive throughout their litigation.

"I try to convey to all my clients that I can appreciate the difficulties that lie ahead for them during and after the litigation. I am not a detached lawyer but a lawyer who truly cares about the outcome of each and every aspect of their case. I strongly believe in coming up with solutions outside of the box to fit my client's individual case rather than using a cookie cutter approach to family law. At the end of the day, my clients are real people with real problems who have trusted me to take care of their family's legal needs."


Practice Areas


  1. Family: 25%
    11 years
  2. Divorce & Separation: 25%
  3. Child Support: 25%
  4. Child Custody: 25%



Retainer (Sometimes)

Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

12 total 

  • Lara Margaret Dethlefs

    I highly recommend Tristen to anyone needing legal representation in the family-law arena. Tristen's vast experience allows her to give practical and strategic advice. She is a fast-thinker and is excellent in court. She has compassion for her clients as she guides them through what can be a very difficult process.


    Lara Dethlefs Divorce & Separation Attorney
    Relationship: Co-worker

  • Kokie Elizabeth Adams

    I endorse this lawyer.


    Kokie Adams Estate Planning Attorney
    Relationship: Fellow lawyer in community

Contact Info

Dethlefs Sparwasser Reich Dickerson & Key, PLLC

100 Second Avenue South
Suite 190
Edmonds, WA, 98020



Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
10 Best for Client SatisfactionAmerican Institute of Family Law Attorneys2015
Rising StarsSuper Lawyers2009
Work Experience
TitleCompany NameDuration
Equity PartnerDethleffs Sparwasser Reich Dickerson & Key, PLLC2008 - Present
Senior AssociateStella L. Pitts & Associates, PLLC2004 - 2008
Extern ClerkWashington State Supreme Court, Justice Tom Chambers2003 - 2003
Rule 9 ClerkMulticounty Public Defender, Appellate Division2003 - 2003
Research AssistantSeattle University School of Law2002 - 2002
Lead Domestic Violence CoordinatorCity of Kent Attorney's Office1999 - 2001
Legal AdvocateSnohomish County Center for Battered Women1995 - 1999
Association NamePosition NameDuration
Snohomish County Bar AssociationActive Member2011 - Present
Washington State Bar AssociationActive Member2004 - Present
King County Bar AssociationActive Member2004 - Present
Seattle Human Rights CommissionCommissoner2000 - 2001
Washington Criminal Justice Training CommissionTrainer2000 - 2001
Asian Women and Family Safety CenterBoard of Director1998 - 2000
Publication NameTitleDate
Seattle University Law Review - Editorial Acknowledgment(Un) Examined Assumptions and (Un) Intended Messages: Teaching Students to Recognize Bias Language in Legal Analysis and Language2003
School NameMajorDegreeGraduated
Seattle University School of LawLawJuris Doctor2004
Western Washingrton UniversityPsychologyBachelor of Arts1994
Speaking Engagements
Conference NameTitleDate
Washington State Criminal Justice Training CommissionDomestic Violence Crimes Investigations2001
WA State Domestic Violence Judicial ConferenceDomestic Violence1999