Mason County Washington - Government Information
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Office Hours:
Office Hours 8:30 - 4:30 M-F

Assessor Home

Online Parcel Info
Washington State Property
Valuation Requirement
What is Market Value?
What Types of Properties are Assessed?
How is the Value of Real Property Determined?
Property Tax Limitations
What if I Disagree with My Property's Assessed Value?
How Often Does Mason County Appraise Property?
Who Determines the Amount of a Property Tax Bill?
Public Participation
Destroyed Property
Agricultural / Timber Designation
Current Use Program
Senior Citizen / Disability / Exemption
Exemption for Physical Improvements to a Single Family Dwelling
Tips for Appellants
Property Transfers

Welcome to the office of the Assessor
Melody Peterson
Mason County Assessor
This website is designed for residents and visitors seeking information about real estate as it relates to the property tax system in Mason County. Our primary responsibility to the taxpayers of Mason County is to establish fair and equitable value for all real and personal property.

The Assessor is responsible for maintaining a list of all real and personal property parcels, including assessment of value and current ownership.  As required by law, the Assessor prepares, possesses and updates a complete set of maps drawn from legal descriptions, to indicate all parcel configurations for land in the County.  The Assessor sets current market values and calculates levies based on the taxing district’s budgets.  This office also administers senior/disability property tax exemptions, and forest or agriculture programs. This office works to treat everyone fairly and promptly. 

If you have questions, please feel free to contact us.
360 427-9670 ext 491  from Belfair 360 275-4467, from Elma  360 482-5269