A headshot of Bill Severson.

William C. Severson

Special Counsel
Seattle

William Severson’s practice focuses on Washington state and local property taxes, and governmental fees and charges. With almost 50 years of experience, Bill helps clients navigate these complex tax and valuation issues and represents them when an administrative appeal or litigation becomes necessary.  

His experience includes complex tax valuation disputes, class actions challenging state and local taxes and fees, valuation and equalization of public utility property, excise tax litigation, federal commerce clause limitations on state tax authority, taxation of leasehold estates and other partial interests in publicly owned property, challenges to illegal and unconstitutional governmental exactions, the illegal exercise of special levy tax authority, governmental financial management practices and procedures, inter-governmental tax immunity, and challenges to local tax officials when they act outside the scope of their legal authority.

Bill began his practice in Washington State as a deputy prosecuting attorney for King County, where he advised and represented county officials on tax and finance matters.

Experience 

Representative Matters

  • Wilson v. Cantera Development Group

    Negotiated settlement for assessment reductions for brownfield site to reflect negative value impact of environmental contamination

  • 909 A Destiny v. Pierce County*

    Negotiated settlement for assessment of major office building to reflect property's exceptional vacancy level

  • North Forty Lodging, LLC, dba Alderbrook Resort & Spa v. Mason County Assessor*

    Favorable decision on resort valuation appeal

  • Arden Realty v. Snohomish County Assessor; King County Assessor v. East Campus 3; Eastgate Bellevue Holdings v. King County*

    Obtained reduced tax assessments for office buildings to reflect the value impact of exceptionally high level of vacancy

  • Willows Health Holdings LLC v. King County *

    Successful settlement in appeal of tax assessment for senior living facility

  • Block at Ballard II, LLC v. King County *

    Negotiated settlement to reduce assessment to reflect impact of hazardous waste remediation requirements for property

Professional Highlights

Professional Activities

Department of Revenue, Business Advisory Council

National Association of Property Tax Attorneys, Board of Directors

Washington State Bar Association, Tax Section, State and Local Tax Subcommittee

Institute for Professionals in Taxation, Associate Member

International Association of Assessing Officers, Associate Member

Board Memberships & Community Service

Rental Housing Association of Puget Sound, past Board Member

University of Washington Economics Department Visiting Committee, Chair

Publications

"Tax or Fee? A Proposed Framework for Deciding When Constitutional Tax Limitations Apply," 57 Gonzaga Law Review 41, 2022

Co-Editor, “Washington Real Property Deskbook Series,” Washington State Bar Association

Credentials 

Education

University of Washington School of Law (J.D. 1974)

University of Washington (B.A., cum laude, 1971)
Honors College

Admissions

Washington

U.S. District Court for the Western District of Washington

U.S. Court of Appeals for the Ninth Circuit

U.S. Supreme Court