Comparable Sales Data Worksheet

The following chart in Excel format (.xls) is designed to help organize your evidence by letting you list and compare the important characteristics of your property (Subject) with those of other properties (Sale 1, Sale 2, etc.) called comparable sales.

Comparable sales are those properties that have sold on the open market and that best match the characteristics of your property. The chart contains explanations for each item. Not all of the characteristics need to be filled out.

Some counties have online databases that can be accessed to collect this information.

Remember that, under the rules, you must submit any new evidence (like the chart) to us, the Board of Tax Appeals, at least 10 business days prior to the date of your scheduled hearing AND you must also provide a copy of that evidence to the other party: the county assessor. See WAC 456-10-505.

You may submit the chart to us by emailing it to bta@bta.state.wa.us, mailing it to Board of Tax Appeals, P.O. Box 40915, Olympia, WA 98504-0915, or faxing it to 360-586-9020.

If you have any questions about this chart or its use, contact us by email or call our toll free number 1-866-788-5446.