Disabled applicants must complete form DTE 105E,. Apply for Homestead Exemption, Visit the Clark County Auditor website to learn how to apply for a homestead exemption.There is a real estate homestead exemption available. Please contact the Clark County Auditor's Office at 937-521-1862 for details. 3. The Homestead Exemption program is for residents 65 years of age or older this year or those permanently and totally disabled. Homestead Exemptions. Apply with the county auditor. Click here for the Clark County PRC Plan (PDF). Exercise of local options or authority is found in the Clark County Code. Employers: Use Business Services Online (BSO) to submit W-2s.