Substitute House Bill No. 5579 amends Special Act 19-4 to facilitate the conveyance of three parcels of state land to the town of Cheshire. The bill specifies that the Commissioner of Transportation will convey these parcels at a cost equal to the administrative expenses involved in the transfer. The parcels include approximately 3.59 acres, 0.88 acres, and 43.6 acres, all identified on the town's Tax Assessor's Map 4. The conveyance is subject to the approval of the State Properties Review Board, and the precise size of the parcels will be determined by the commissioner.

The bill outlines that the town of Cheshire must sell the parcels for specific purposes, including economic development, the development of a medical facility, housing, or the preservation of open space. If the town does not sell the parcels for one of these purposes by July 1, 2031, the land will revert to the state. The sale must be at fair market value, determined by independent appraisals, and any funds received from the sale will be directed to the State Treasurer for the Special Transportation Fund. The bill also establishes a timeline for the State Properties Review Board to complete its review of the conveyance.