Kittitas County Tax Records Lookup
Kittitas County property tax records are searchable through the county's COMPAS mapping application and the Assessor's office in Ellensburg. The Kittitas County Assessor determines the value of all real and personal property in the county and sets an equitable basis for tax levies. You can look up parcel data, ownership, building characteristics, and assessed values online for free using the COMPAS viewer or by downloading raw data files from the GIS Open Data Hub.
Kittitas County Overview
Kittitas County Assessor's Office
The Kittitas County Assessor's office is at 205 W 5th Ave Suite 101, Ellensburg, WA 98926. Hours are Monday through Thursday, 9 AM to 4 PM, and Friday 9 AM to 3 PM, though courthouse closures may affect hours. Call 509-962-7501 for real property questions or email assessoradmin@co.kittitas.wa.us. For business personal property inquiries, email personalproperty@co.kittitas.wa.us.
The Assessor determines the value of all real and personal property and sets assessments to support levies from taxing districts and voter-approved special levies. All values reflect market conditions as of January 1 of the assessment year. The office mails paperless valuation notices to property owners who opt in. If you believe your value is wrong, you can appeal to the Kittitas County Board of Equalization.
| Office | Kittitas County Assessor |
|---|---|
| Address | 205 W 5th Ave Suite 101 Ellensburg, WA 98926 |
| Phone | 509-962-7501 |
| assessoradmin@co.kittitas.wa.us | |
| Hours | Mon-Thu 9 AM-4 PM, Fri 9 AM-3 PM |
| Website | co.kittitas.wa.us/assessor |
COMPAS Property Mapping Tool
The primary online search tool for Kittitas County property tax records is the COMPAS Property Information Web Mapping Application. It works on desktop computers, mobile phones, and tablets. The application is built on the ArcGIS Web AppViewer platform and displays parcel boundaries, ownership data, and assessment layers on an interactive map.
You can search by parcel number, owner name, or property address. Once you find a parcel, the viewer shows current assessed values, ownership details, building characteristics, and sales data including sale date, sale price, grantor, and grantee. The map also integrates ortho photography, zoning layers, and district boundaries for additional context. Data reflects the Assessor's database and is updated as verification efforts continue.
For questions about parcel records or real property assessments that aren't answered by the COMPAS viewer, contact the Assessor at assessoradmin@co.kittitas.wa.us or call 509-962-7501.
The COMPAS viewer is the official public-facing tool for Kittitas County property tax and assessment information.
The COMPAS viewer combines parcel maps, ownership data, and assessment layers in a single mobile-friendly interface.
Note: The county does not warrant the accuracy or timeliness of information in the COMPAS system; verify critical data with the Assessor's office.Kittitas County GIS Open Data Hub
The Kittitas County GIS Open Data Hub combines the Maps Portal and Open Data page into one place for GIS information and downloadable assessment files. You can download CSV tables directly from the Assessor's database without registration or cost.
Available datasets include sales records with sale date, price, grantor, and grantee; the parcel file with current values and ownership; and building characteristics data across three worksheets. Spatial layers can be downloaded and imported into a file geodatabase and attached to the parcel layer for GIS analysis. The portal is licensed under CC-BY-SA and is intended for property tax research, planning, and appraisal work.
The Kittitas GIS Open Data Hub hosts downloadable parcel, sales, and building characteristics datasets for the entire county.
Kittitas County Treasurer and Tax Payments
Property tax payments for Kittitas County go to the Treasurer's office at 205 W 5th Ave STE 102, Ellensburg, WA 98926. Hours are 9:00 AM to 4:00 PM Monday through Friday. The Treasurer also has a branch in Upper Kittitas County at 700 E 1st St in Cle Elum, which accepts payments from 1:00 PM to 4:00 PM on Tuesdays and Fridays in April and October.
Taxes are due in two halves. The first half must be paid or postmarked by April 30. The second half is due October 31 if the first half was paid on time. Parcels with a total tax and assessment of $50 or less must be paid in full by April 30. You can pay by check (made out to Kittitas County Treasurer), or online by credit card, debit card, or eCheck through the county's payment portal. Online convenience fees apply: 2.5% for credit cards, 0.95% for debit cards, and $2.00 flat for eCheck. NSF checks are assessed a $35.00 fee per Resolution 2024-013.
Taxes may be paid under protest per RCW 84.56. The Washington State Department of Revenue website has information on the requirements for tax protest payments. Delinquent taxes accrue interest and penalties monthly. More information on payment options is at co.kittitas.wa.us/treasurer/payments.aspx.
Kittitas County assessment and parcel data is freely downloadable through the GIS Open Data Hub.
Kittitas County Auditor and Recorded Documents
The Kittitas County Auditor's Recording Division handles deeds, real estate contracts, liens, mortgages, and other instruments affecting title. The office is at 205 W 5th Suite 105, Ellensburg, WA 98926. Call 509-962-7504 or email recording@co.kittitas.wa.us for recording questions.
Documents become public upon filing and are indexed with a unique filing number. An official records search is available online, though online payments for copies are not currently offered. Search fees run $8.00 per hour per name with a one-hour minimum. Certified copies cost $3.00; regular copies are $1.00. Nonstandard documents that don't meet state standards under RCW 36.18.010 may be recorded for an additional $50.00 fee. The Auditor also holds birth and death records from 1891 to 1907 and marriage records from 1884 to present for Kittitas County.
The Auditor certifies documents in their entirety, making certified copies admissible in courts of law. If you need a certified copy of a deed or other recorded instrument, contact the Recording Division directly.
Cities in Kittitas County
Kittitas County includes Ellensburg, Cle Elum, Kittitas, and several smaller communities. Property tax records for all parcels in the county are maintained by the Kittitas County Assessor in Ellensburg.
No cities in Kittitas County meet the population threshold for individual city pages on this site. For parcel lookups in any part of the county, use the COMPAS viewer or contact the Assessor's office directly.
Nearby Counties
These counties border Kittitas County. Each maintains its own assessor's office and parcel search system.