William T. Cornell

Member, Seattle

William T. Cornell Profile Picture

Martindale-Hubbell Peer Review Rated.

Professional Experience

Mr. Cornell is a seasoned litigator working on all types of general liability, real estate, construction, and complex commercial disputes. He uses his construction litigation experience to provide clients with advice in contract negotiation and drafting.   He is also an experienced corporate attorney, providing risk management and related advice to a variety of clients including developers, contractors, landlords and other real estate professionals.

Prior to joining Preg, O'Donnell & Gillett, Mr. Cornell was the managing partner at a west coast law firm. He previously had served as director of litigation management for Fireman’s Fund Insurance Company, and as in-house counsel for a regional homebuilder.

Mr. Cornell is an experienced mediator and arbitrator, and has served in this capacity in a variety of disputes.


Mr. Cornell received a Bachelor of Science in Biology from the University of California at San Diego in 1982.

He received his law degree from the University of San Diego School of Law in 1989, where he also served as Law Review Managing Editor.

Admitted to Practice

  • Washington State Courts (WSBA #18867)
  • Oregon State Courts (OSBA #132367)
  • U.S. District Courts - Western and Eastern Districts of Washington

Professional & Community Activities

In addition to his admissions to the Washington and Oregon Bar Associations, Mr. Cornell is also a member of the Master Builders Association.

Mr. Cornell is a regular speaker at various construction-related seminars including West Coast Casualty, WDTL, The Seminar Group, MC Consulting and CLM.


Mr. Cornell has an "AV" rating from Martindale-Hubbell.  Under the Martindale-Hubbell criteria, an AV Rating shows that a lawyer has reached the height of professional excellence and is recognized for the highest levels of skill, integrity and ethics.