Atty. Siona Dee Windsor

Atty. Siona Dee Windsor

Siona Dee Windsor is a lawyer. Siona received a B.A. degree from University of California at Santa Cruz in 1974, and has been licensed for 47 years.

Mercer Island Mercer Island 47 yrs experience 47 year
Call (425) 988-0039 Book Appointment

Profile Summary

About Siona Dee Windsor at a glance

Siona Dee Windsor is an attorney based in Mercer Island, Washington. They have 47+ years of legal experience, licensed to practice since 1979. Admitted to practice in California (1979) and Washington (1993). Educated at University of California at Davis (J.D., 1979) and University of California at Santa Cruz (B.A., 1974). Serands clients in Mercer Island, WA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Siona Dee Windsor is a lawyer
  • Siona received a B.A. degree from University of California at Santa Cruz in 1974, and has been licensed for 47 years
  • Siona practices in Mercer Island, WA

Jurisdictional Context

Why local counsel matters in Washington

Practicing law in Washington. Legal matters in Washington are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Mercer Island are typically filed in the local municipal court or the appropriate Washington state district court, depending on subject matter and amount in controversy. An attorney licensed in Washington brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Washington courts without local counsel or pro hac vice admission.

Looking for additional Washington attorneys? Browse all attorneys in Mercer Island or all attorneys in Washington.

Frequently Asked

Common questions about Siona Dee Windsor

Where is Siona Dee Windsor's law office located?
Siona Dee Windsor's law practice is located in Mercer Island, Washington. You can contact the office directly through this profile page.
How long has Siona Dee Windsor practiced law?
Siona Dee Windsor has 47+ years of legal experience and has been licensed since 1979.
Where did Siona Dee Windsor go to law school?
Siona Dee Windsor earned their education at (J.D., 1979); (B.A., 1974).
How can I contact Siona Dee Windsor for a consultation?
You can contact Siona Dee Windsor directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

J.D.
University of California at Davis
- 1979
B.A.
University of California at Santa Cruz
- 1974

Bar Admissions

California
Admitted: 1979
Washington
Admitted: 1993

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