In 1996, the town of Clifton Park adopted a Conservation Easement Law. Owners of historic buildings or landowners with a minimum of 15 acres per lot (or 7.5 acres each for any two adjoining lots) can apply to the town’s program. In exchange for 15- to 25- year commitments to not develop the land, the town reduces the property tax assessments of participating landowners by 80 to 90 percent.