(1) The deed made by the county treasurer shall be under the official seal of office and acknowledged by the county treasurer before some officer authorized to take the acknowledgment of deeds. When so executed and acknowledged, it shall be recorded in the same manner as other conveyances of real estate. When recorded it shall vest in the grantee and his or her heirs and assigns the title of the property described in the deed, subject to any lien on real estate for special assessments levied by a sanitary and improvement district which special assessments have not been previously offered for sale by the county treasurer.

(2) Within thirty days after recording of the deed, the grantee shall pay the surplus to the previous owner of the property described in the deed. For purposes of this subsection, the surplus shall be calculated as follows:

(a) If the property has been sold since recording of the deed, the surplus shall be equal to the amount received from such sale, minus (i) the amount that would have been needed to redeem such property, (ii) the amount needed to pay all encumbrances on such property, and (iii) an administrative fee of five hundred dollars or reasonable attorney‘s fees in the event of judicial foreclosure, which may be retained by the grantee to offset the costs incurred in obtaining the deed; or

(b) If the property has not been sold since recording of the deed, the surplus shall be equal to the assessed value of such property, minus (i) the amount that would have been needed to redeem such property, (ii) the amount needed to pay all encumbrances on such property, and (iii) an administrative fee of five hundred dollars or reasonable attorney’s fees in the event of judicial foreclosure, which may be retained by the grantee to offset the costs incurred in obtaining the deed.