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About me

Kris Costello is a seasoned courtroom attorney.  She has twenty-one years of trial experience in State and Federal Court.  She represents individuals and companies in civil and criminal white collar matters.   She advises licensed professionals, business leaders and corporate executives in highly regulated industries on compliance, risk and crisis management. She represents professionals in administrative and disciplinary proceedings.  Kris has taught trial advocacy at the University of Washington since 2006 and at the National Institute for Trial Advocacy (NITA) since 2007.  She leads a team of trial attorneys at Costello Law Firm, PLLC, a highly regarded boutique trial law firm.  Kris is AV rated by Martindale Hubbell and in 2010 and 2011 was designated a Super Lawyer by Law and Politics.  She graduated from Boston University School of Law and was admitted to the Washington State Bar Association in 1991.


Costello Law Firm Is a Boutique Law Firm.  The firm attorneys represent individuals and businesses. The Firm's practice areas include civil litigation, general counsel criminal defense, family law, wills and estate planning. The Firm's litigation practice serves professionals, businesses and corporate executives facing civil suit, licensing actions, government enforcement or investigations. The firm's general counsel practice serves fast growing companies and companies in transition with corporate formation, governance, and contract work. The firm recently launched a "preventative law" practice designed to assist business clients with risk management and compliance systems in human resources and industry specific regulations. The law firm has been a vital part of Seattle's legal community since 1998.   



Practice areas


  1. White Collar Crime: 50%
    25 years
  2. Criminal Defense: 50%
    25 years


Payment types:

Cash, Check, Credit card

Attorney endorsements

4 total 

Are you an attorney? Endorse this lawyer

  • Kathryn M. Silk

    Kris is an excellent attorney, and wonderful mentor. As a professor with the University of Washington for their trial advocacy class she imparted her knowledge of the inside workings of the court room with skill and flare. Ms. Costello is consistently diligent and prepared; giving her all to every one of her cases.


    Kathryn Silk Family Attorney
    Relationship: Fellow lawyer in community

  • Ann Michaela Carey

    Kris Costello is an excellent lawyer. I endorse her without hesistation. Kris is honorable, hard working and will leave no stone unturned in the representation of her clients. She is a leader in the criminal defense bar, has been a mentor to young attorneys, and is highly respected in the legal community. She has a keen mind and thoughtful heart; there is no attorney in Seattle like Kris. I strongly recommend her.


    Ann Carey Criminal defense Attorney
    Relationship: Fellow lawyer in community

Contact info

Costello Law Firm, PLLC

1000 Second Avenue Suite 1780
Seattle, WA, 98104


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Chapter Member of the YearWashington Women Lawyers, King County Chapter2009
Work experience
TitleCompany nameDuration
FacultyNational Institute for Trial Advocacy (NITA) Northwest Trial Skills Program2007 - Present
Part-Time Lecturer - Trial AdvocacyUniversity of Washington School of Law2006 - Present
N/APrivate Practice1998 - Present
N/ASeattle Public Defender1991 - 1998
Association namePosition nameDuration
American Inns of CourtMemberN/A
Washington State Bar AssociationMemberN/A
Washington Association of Criminal Defense AttorneysMemberN/A
National Association of Criminal Defense LawyersMemberN/A
Federal Bar AssociationCo-Chair, Criminal Law SectionN/A
Washington Women LawyersCo-Chair, Criminal Law SectionN/A
Criminal Justice Act PanelDistrict Representative2003 - 2008
Publication nameTitleDate
Federal Bar Association of the Western District of Washington NewsCriminal Law Committee Co-Sponsors Wide-Ranging White Collar Crime CLE2008
School nameMajorDegreeGraduated
Boston University School of LawLawJD - Juris Doctor1991
Boston CollegeHistoryBA - Bachelor of Arts1987
Speaking engagements
Conference nameTitleDate
Federal Bar Association CLEThe Canadian Defendant2009
Federal Bar Association CLECurrent Issues in White Collar Litigation2008