Island County Property Records

Island County property records are public documents managed by the Assessor and Treasurer offices in Coupeville, Washington. These records include parcel data, ownership history, assessed values, tax accounts, and recorded instruments for properties on Whidbey Island and Camano Island. This page explains how to find Island County property records using the county's online tools and what each office handles.

Island County Property Records Overview

Island County consists primarily of Whidbey Island and Camano Island in Puget Sound. Coupeville is the county seat, and Oak Harbor is the largest city. The county's Assessor and Treasurer offices handle property valuation, parcel data, and tax collection for all real and personal property in the county. All records are public under Chapter 42.56 RCW, Washington's Public Records Act.

The Assessor is required to physically inspect, appraise, and revalue all real property on a six-year cycle with an annual review and update based on sales analysis. This cycle is set by the state constitution and enforced by the Washington State Department of Revenue. Each year, the Assessor also allocates value to taxing districts, calculates levy rates, and certifies tax rolls to the Treasurer. The Treasurer then collects taxes and redistributes the funds to the state, school districts, fire districts, hospital districts, parks and recreation districts, and other service providers.

Island County property records are available online through the county's Real Property Search portal. This tool lets you look up ownership, assessed value, and tax information by address or parcel number. The county government website is islandcountywa.gov, and both the Assessor and Treasurer pages are linked from the main government departments directory.

Island County Assessor Property Data

The Island County Assessor maintains inventory, ownership, sales data, and mapping for all properties in the county. State law requires the Assessor to value all property at 100% of true and fair market value. The office provides public computer access to assessment data as well as online access through the Real Property Search. For questions about assessed values, contact the Assessor's office directly. For tax collection and billing questions, call the Treasurer at 360-679-7302.

Exemption programs administered by the Island County Assessor include the Senior Citizen and Disabled Persons exemption, Open Space taxation, Forest Land exemption, Farm and Agricultural exemption, Historic Properties exemption, and Residential Home Improvement exemption. The Assessor also handles business personal property listings and audits. If you want to appeal a valuation, appeals go to the Board of Equalization, not the Assessor's office. The appeal office number is 360-679-7379.

The Assessor's appraisal cycle means most Island County properties get a full physical inspection once every six years. In the other five years, values are updated through statistical sales analysis and targeted inspections of areas where market conditions have shifted significantly. This approach is standard across Washington under RCW 84.41.030. Property owners receive change of value notices when assessments are updated, and the Assessor's website explains how to read those notices and what options are available if you disagree.

The Island County Assessor maintains detailed parcel records for all real and personal property on Whidbey Island and Camano Island.

Island County Treasurer and Tax Records

The Island County Treasurer collects property taxes and redistributes the funds to state, county, and district accounts. Property taxes for 2026 were certified and statements mailed February 20, 2026. The due date for property taxes is April 30. Any balances unpaid after that date accrue interest. The Treasurer also handles Real Estate Excise Tax under RCW 82.45, which is collected at the time a property is sold or transferred.

Property tax payments can be made online through the Island County Treasurer's payment portal, Point and Pay. The Treasurer's website also provides a parcel search tool for viewing current tax balances and property information. As of January 1, 2026, payment processing fees for online transactions increased. The Treasurer offers AutoPay enrollment, address change forms in English, Spanish, and Tagalog, and the option to sign up for email tax statements instead of paper ones. Autopay enrollment and cancellation deadlines vary, so check the Treasurer's website for current dates.

Under RCW 84.56.020, failure to receive a tax statement in the mail does not relieve a property owner of the obligation to pay on time. This is true in Island County as in all Washington counties. If you do not receive your statement, request one by email through the Treasurer's office. Property taxes collected by the Island County Treasurer fund the state general fund for public schools, hospital districts, fire districts, the county library, parks and recreation, emergency medical services, and Island County roads and services.

The Island County Treasurer collects taxes for dozens of taxing districts serving Whidbey Island and Camano Island residents and provides an online payment portal for convenience.

Note: When paying Island County property taxes online, allow two business days for the payment to be reflected in the online parcel data system.

Recorded Documents and Historical Island County Records

Island County's Recording section handles all instruments that affect real property in the county, including deeds, deeds of trust, reconveyances, liens, easements, and plat maps. Under RCW 36.22.010, all qualifying documents must be accepted and indexed when tendered with proper fees. Recording gives constructive notice under RCW 65.08.070, protecting recorded interests against later claims from parties without notice.

For older Island County records, the Washington State Digital Archives provides free access to historical deeds, mortgages, plat maps, and survey records going back to the county's early days. Researchers can search by record type, date range, and party name. The archive partners with Island County to keep expanding its digital collections. Documents are available around the clock with no login required.

Additional Island County Property Resources

The Washington Department of Revenue directory links to Island County assessor and treasurer contact information. The DOR also publishes property tax guides, forms, and the County Assessor's Manual used statewide to ensure consistent valuation practices. This is a useful reference for understanding how Island County properties are valued and how levy rates are set.

Property owners in Island County who believe their assessment is too high can request an informal review from the Assessor's office first. If not resolved, a formal appeal to the Board of Equalization is the next step. Filing deadlines for appeals are strict. The MRSC guide to county officials explains how the Board of Equalization operates across Washington counties, including what evidence is most useful when challenging a value.

Island County's geography creates some unique considerations for property records. Properties on islands accessed by ferry may have access easements or shoreline designations that affect their recorded status. If you are researching property near water in Island County, review both the recorded documents in the Auditor's system and the GIS layers in the Assessor's mapping tool to get a complete picture of the parcel's legal status.

Cities in Island County

Island County includes Oak Harbor, Langley, Coupeville, and other communities on Whidbey Island and Camano Island. No cities in Island County currently have individual property records pages on this site. All property records are maintained through the county offices in Coupeville.

Nearby Counties

These counties are adjacent to Island County in northwestern Washington. Each has its own property records system and parcel search tools.