Section 58.28
The council may provide for the deferred payment of special assessments from persons who, in the opinion of the council and treasurer, by reason of poverty are unable to contribute toward the cost thereof. In all such cases, as a condition to the granting of such deferred payments, the village shall require mortgage security on the real property of the beneficiary payable on or before his death, or in any event on the sale or transfer of the property. (Comp. Ords. 1987, § 12.427)