Island County Property Appraiser & Tax Assessor
Real property appraisal records, parcel search lookup, property tax rates, and assessment protest deadlines for Island County, Washington.
Island County Assessor's Office Information
Island County Appraisal & Assessment Office, Coupeville, WA 53001
Get Driving Directions ↗Monday - Friday: 8:00 AM - 4:30 PM (Local Time)
Closed on state & federal holidays.
(360) 793-7299
County Parcel Viewer / eRealProperty
Island County Property Tax Calculator
Estimated using Island County's effective tax rate of 0.87% (Assessment ratio: 100%)
Appealing Your Island County Assessment
July 1 of the assessment year or within 30 days (up to 60 days in some counties) of the value notice.
Under Washington property tax law, property owners in Island County have the legal right to challenge an assessed valuation that exceeds fair market value, is unequally appraised compared to neighboring properties, or contains clerical errors.
Contact the Island County Assessor's Office to review your property record card, verify square footage, and present recent comparable sales (comps).
If informal review does not resolve the valuation, file a written notice of appeal with the County Board of Equalization (BOE) before the statutory deadline.
Was Your Island County Home Over-Assessed This Year?
Studies show up to 30% to 60% of US residential properties are overvalued by automated municipal algorithms. Protesting your assessment before the statutory deadline can lower your tax bill by an average of $1,100/year.
Island County Homestead Exemptions & Tax Relief
Homeowners in Island County who occupy their home as their permanent primary residence may qualify for property tax reductions under state and local homestead programs:
Senior Citizen and People with Disabilities Property Tax Exemption program freezes home value and exempts portions of regular and excess levies based on county median income.
Tiered exemptions for seniors 61+ and 100% disabled veterans with disposable income under county thresholds (e.g. up to $84,000 in King County).
Need Deed, Lien, or Title Records for Island County?
While the Property Appraiser values real estate for taxation, official legal property transfers, warranty deeds, mortgages, and marriage records in Island County are maintained by the County Clerk & Recorder.
Frequently Asked Questions
Where is the Island County Property Appraiser office located?
The official Island County property appraisal and tax assessment office is located at Island County Appraisal & Assessment Office, Coupeville, WA 53001. Operating hours are typically Monday - Friday: 8:00 AM - 4:30 PM (Local Time). You can reach the customer service staff by phone at (360) 793-7299.
What is the property tax rate in Island County, WA?
The average effective property tax rate in Island County is approximately 0.87%. For a home with the median county market value of $525.000, the estimated annual property tax is about $4568 per year.
How do I search for a property or parcel in Island County?
You can look up property record cards, assessed valuations, ownership history, and parcel boundary maps online through the official Island County parcel search portal: https://islandcountywa.gov/assessor/parcel-search.
When is the deadline to appeal my property assessment in Island County?
Property valuation protests and appeals in Island County must be submitted by: July 1 of the assessment year or within 30 days (up to 60 days in some counties) of the value notice. Appeals are formally reviewed and heard by the County Board of Equalization (BOE).
How does the Homestead Exemption work in Island County?
Senior Citizen and People with Disabilities Property Tax Exemption program freezes home value and exempts portions of regular and excess levies based on county median income. Additional exemptions are available for senior citizens (65+) and disabled military veterans (Tiered exemptions for seniors 61+ and 100% disabled veterans with disposable income under county thresholds (e.g. up to $84,000 in King County).).
Adjacent & Neighboring County Appraisers
County Overview
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