2025/2026 Personal Property Returns (equipment listings) were mailed on January 21st, 2025, and are due by April 30th, 2025. Listings filed after the due date will incur a monthly penalty of 5 percent of the tax due, not to exceed 25 percent.

The Returns are for the 2025 assessment (equipment and ownership as of January 1, 2025) for taxes payable in 2026.

Personal Property Returns can be submitted by the following options:

• E-File - https://property.masoncountywa.gov/PersonalPropertyEfile
• Email - personalproperty@masoncountywa.gov (excel format preferred)
• Mail - PO Box J, Shelton, WA 98584
• Drop Box (alley between Bldg. #1 & Bldg. #9)

If you have any questions, please contact (360) 427-9670 ext. 496, or personalproperty@masoncountywa.gov.

Starting December 2024, appraisers are physically inspecting Area 2 of Mason County, which will be utilized for the 2025 assessment year/2026 tax year. Most of this area is within the city limits, with the remainder that includes Shelton Matlock Rd to Dayton, Shelton Valley Rd, Brockdale Rd to just before McEwan Prairie Rd, Shelton Springs Rd, Johns Prairie Rd and Highway 3 out to Bayshore, Arcadia out to Totten Shores, a portion of the beginning of Cole Rd, and the Mill Creek area.

State law requires all taxable real property be physically inspected at least once every six years for the purposes of assessment and valuation (RCW 84.41.030). In accordance with RCW 84.40.025, all taxable property is subject to visitation, investigation, examination, discovery, and listing at any reasonable time by the county assessor or designated employee for assessment and valuation purposes. Physical inspection means, at a minimum, an exterior observation of the property to determine whether there have been any changes in the physical characteristics that affect value and must be appropriately documented in accordance with the findings of the physical inspection (WAC 458-07-015). If access is refused, the appraiser must estimate the property value using available information, which may not result in an accurate assessment.

Due to our revaluation timeline and our volume of parcels, we do not make individual appointments, nor does the taxpayer need to be present at the time of inspection, as these are exterior inspections only. Upon arrival, the appraiser will attempt to make contact by knocking on the door of an improved parcel. We highly encourage taxpayers to discuss any ongoing issues with their property to ensure our assessment represents the current condition. Please note, all appraisers will be wearing orange vests with a visible Mason County badge and driving a white Ford Escape with the Mason County logo.

If you have any questions or concerns, please call 360.427.9670, ext. 491.

2025 uncertified – subject to change assessed values are available on TaxSifter. If your value is corrected due to new construction, destroyed property, manifest error, segregation, or sales review, you will receive a corrected Notice of Value. 2025 assessments represent value as of January 1, 2024* for taxes payable in 2025, which was based upon 2023 and prior sales data. The Assessor is required by state law to appraise at 100% of market value. If you have any questions or concerns, please contact our office. We are available Mon-Fri, 9-4, in-person, email, or phone, 360-427-9670, ext. 491
* New construction assessment date – 7/31/2024

In accordance with WAC 458-12-360 & RCW 84.40.045, the Mason County Assessor announces the county-wide mailing of our annual Notice of Value on October 11th, 2024. These notices represent value as of January 1st, 2024, for taxes payable in 2025, which was based upon 2023 and prior sales data.

If you disagree with your assessment, you may appeal to the local Board of Equalization (BOE), but it is highly encouraged to contact our office first to review any questions or concerns you may have with your assessed value. Property owners who are unable to resolve their concerns directly with the Assessor’s Office may appeal their value to the Board of Equalization within 30 days of the date of the valuation notice.

The last day to file an appeal is November 12th, 2024. If you have any questions or concerns regarding your 2025 Notice of Value, please contact my office; my dedicated team is standing by to assist. We are available Mon–Fri, 9-4, in-person or by phone, 360-427-9670, ext. 491.