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. Learn more about exemptions and deferrals for senior citizens, persons with disabilities, and disabled veterans. Find out how to qualify and apply. 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. The Senior Citizens and Disabled Persons Property Tax Exemption Program helps eligible individuals on a limited income to pay property taxes. The 2023 Legislature passed Substitute House Bill 1355, which makes changes to property tax exemptions and deferral programs for senior citizens. You must own your home in. The Senior Citizens and Disabled Persons Property Tax Exemption Program helps eligible individuals on a limited income to pay property taxes.