Original use for real estate depends on whether the property is improved or unimproved. Unimproved real estate and abandoned/vacant property which has been vacant for five or more years will be treated as original use by a new owner. Improved real estate will require improvements within a 30-month period that equals the tax basis in the tax basis of the and improvements. Original use of purchased personal property requires the OZ fund or OZ business to be the first user in an OZ census tract (i.e. not eligible for depreciation by another person). Lessees of leased property are treated as original users regardless of whether the property is new or used.