You will not have to reapply again unless your status changes that would require you to fill out a new application. i.e. Forms. Need more information before filling out the forms?Read the Frequently Asked Questions for help. Exemption applications must be filed with your local assessor's office. See our Municipal Profiles for your local assessor's mailing address. FOR COUNTY AUDITOR'S USE ONLY: Taxing district and parcel or registration number. Auditor's application number. Visit your local county office to apply for a homestead exemption. President Abraham Lincoln signed the Homestead Act on May 20, 1862. The applicant must be the surviving spouse of a public service officer killed in the line of duty.