Attention: Before filling out form, download and save to your computer. Property tax exemptions and deferrals.Note: These programs are only available to individuals whose primary residence is located in the State of Washington. You may be eligible if you have limited income and you're at least 61 years old in the year you apply for the exemption. Eligible income limits are based on current legislation. If you are a senior citizen or a person with disabilities with your residence in Washington State you may qualify for a property tax reduction. Enter the SDAT Real Property Tax Identification Number of the property for which Homestead. Eligibility isrequested. This exemption program reduces your property taxes. The amount of the reduction DOES NOT have to be paid back.