I own this property or have a legal, equitable, or leasehold interest in this property. Homeowner Exemption.Each year applicants must complete and file Form PTAX-340 with the Chief County Assessment Officer. General Homestead Exemption Requires an initial application, rentals need annual renewal. To qualify for the SHEVD, the veteran must. • be an Illinois resident who served as a member of the U.S. Armed. Call the Office and we will provide the proper affidavit. Need more information before filling out the forms? Some homestead exemptions come in the form of a flat fee reduction of your assessed home value. Ada County Homestead Exemption Application Form, fill out to apply for exemption fill out on line and turn into the Assessors office.