IL SB1721

Reduces the maximum penalty bid allowed at property tax sales from 18% to 9% of the tax or special assessment amount owed on delinquent property

Expands county authority over tax-delinquent properties held as trustee, changing "shall take all steps" to "may take steps" and explicitly authorizing property maintenance activities including grass mowing, nuisance greenery removal, garbage and debris removal, and demolition or repair of unsafe structures

Allows counties and municipalities to recover costs for property operation, maintenance, staff time, and overhead expenses when selling tax-delinquent properties, in addition to acquisition and sale costs

Broadens criteria for declaring property abandoned from requiring a "dangerous or unsafe building" to any condition that "impairs public health, safety, or welfare" as specified in the petition

Requires at least 30 days notice via posted signage (minimum 1 foot by 1 foot) on properties before abandonment declarations, and allows judicial deeds to be issued to another governmental body designated by the county or municipality rather than only to the filing government entity