Disabled applicants must complete form DTE 105E,. A homestead exemption application form ("DTE 105A") is available from the Ohio Department of Taxation.This can provide asset protection from creditors for at least some of house's value. The application filing period is from January 1st through December 31st. This exemption can be applied to all residential property up to five dwelling units of which at least one is owner occupied. This exemption can be applied to all residential property up to five dwelling units of which at least one is owner occupied. Tax Estimator calculates an estimated annual property tax amounts based on current tax rates and a property valuation you specify. Homestead exemptions can protect a home up to a certain value of the homeowner's equity in it.