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Business Details
17 Years
experience
Your Trusted Family Law & Estate Planning Attorneys in Mill Creek, WA
At Law Offices of Tresa A. Sadler, we specialize in guiding clients through complex legal matters with professionalism and care. Our practice focuses on family law, probate, and estate planning, addressing the unique needs of individuals and families during life's most challenging transitions. With over two decades of combined experience, our attorneys provide strategic legal support tailored to protect clients' rights and interests. Tresa Ann Sadler, our founder, brings expertise from her tenure at Seattle University and years of practice since 2002, complemented by associates Katherine Peterson and Katherine Czubakowski, who contribute specialized knowledge in domestic relations and tribal law.

We prioritize compassionate representation, ensuring clients receive personalized solutions while navigating divorce, child custody, asset division, wills, trusts, and probate administration. Our commitment to excellence is reflected in our membership with the Domestic Relations Attorneys of Washington and our track record of client satisfaction through transparent communication and dedicated advocacy.
Services
Family Law Probate Administration Estate Planning Divorce Representation Child Custody Wills & Trusts Asset Protection Spousal Support Guardianship Designation Prenuptial Agreements
Details
  • Year established: 2009
Highlights and features
  • We offer over 20 years of combined experience in family law and estate planning.
  • Our attorneys provide personalized legal strategies tailored to individual client needs.
  • We prioritize compassionate representation during life's most challenging transitions.
  • Our team includes specialists in Washington State domestic relations and tribal law.
  • We maintain a proven track record of successful case outcomes and client satisfaction.
What people say
Rock during difficult time Compassionate and strategic support Handled everything seamlessly Professional and responsive Made all the difference
Services
Family Law & Divorce
We provide comprehensive family law representation including divorce, child custody, and spousal support. Our attorneys protect client rights during complex transitions while prioritizing amicable resolutions. Services cover property division, prenuptial agreements, and post-divorce modifications, ensuring tailored legal strategies that address individual family dynamics and financial circumstances.
Estate Planning
Our estate planning services create customized solutions for asset protection and legacy preservation. We draft wills, trusts, powers of attorney, and healthcare directives while developing asset protection strategies. The process ensures clear succession plans for beneficiaries, with guidance on guardianship designation and tax-efficient wealth transfer for individuals and families across Washington State.
Probate Administration
We guide executors and beneficiaries through probate proceedings with clarity and care. Services include estate inventory, asset distribution, will contest representation, and tax filing compliance. Our team streamlines complex legal processes for estates in Washington State, providing executor support while minimizing family conflicts during the settlement of loved ones' affairs.
People
Tresa Ann Sadler
Founder
Tresa Sadler founded the firm in 2009 after eight years at Law Offices of J. Michael Gallagher. A Washington State Bar member since 2002, she specializes in family law and estate planning with a focus on compassionate client representation.
Katherine Peterson
Attorney
Katherine joined in 2016 after clerking for Leonard Kerr and working at Shipman & Uberti. She specializes in domestic relations law, bringing extensive courtroom experience to client cases while maintaining flexible work arrangements between Arizona and Washington.
Katherine Czubakowski
Junior Associate Attorney
Katherine joined as a Rule 9 intern in 2022 after graduating from University of Washington School of Law. She became a Washington State Bar member in 2022 and specializes in family law and tribal court proceedings.
Questions
What areas of law does your firm specialize in?
We focus on family law (divorce, child custody, spousal support), probate administration, and comprehensive estate planning services including wills and trusts.
How does your firm approach complex divorce cases?
We prioritize amicable resolutions while protecting client rights through strategic legal representation, handling property division, child custody disputes, and post-divorce modifications with personalized attention.
What estate planning documents should I consider?
We recommend wills, trusts, powers of attorney, healthcare directives, and asset protection strategies tailored to your specific family and financial situation.
Can you assist with probate matters outside Washington State?
Our primary focus is Washington State probate cases, where we provide executor support, estate settlement guidance, and dispute resolution services for local and out-of-state beneficiaries.