Attention: Before filling out form, download and save to your computer. Homeowners may apply for this exemption at our office at Washington Township Center.Us to have a form mailed to you. Enterprise Zone Sales Tax Exemption Certificate Application, 1599, 131 KB, Details icon. Each year applicants must complete and file Form PTAX-340 with the Chief County Assessment Officer. Owner Occupied General Exemption. Ada County Homestead Exemption Application Form, fill out to apply for exemption fill out on line and turn into the Assessors office. The Cook County Assessor's Office automatically renews Homeowner Exemptions for properties that were not sold to new owners in the last year. Veterans and surviving spouses in Illinois may qualify for a property tax exemption. Douglas County has additional exemptions for 62 years of age or older, disabled veterans or their surviving spouses, and totally disabled homeowners.
