Disabled applicants must complete form DTE 105E,. Attach this form to the homestead exemption application (form DTE 105A) if the applicant is requesting the homestead exemption based on disability status.This is a statewide program which reduces the property tax burden of qualified senior citizens and permanently and totally disabled homeowners. The homestead exemption is a statewide program which allows senior citizens and permanently and totally disabled homeowners to reduce their property tax burden. Douglas County has additional exemptions.