Washington Return on Sale of Real Property is a form used to report the sale of real estate located in Washington State. It is filed with the Department of Revenue and must be sent within 30 days of the sale. The form is used to report the sale of residential, commercial, agricultural, mineral, timber, or other real estate. It must include the details of the sale, such as the names of the buyer and seller, the date of the sale, the purchase price, and any taxes or fees associated with the sale. There are two types of Washington Return on Sale of Real Property: Short Form and Long Form. The Short Form is used for sales of real estate that are not subject to the real estate excise tax. The Long Form is used for sales of real estate that are subject to the real estate excise tax.