What is a CR?
A conservation restriction is a legal agreement made by a landowner not to change the use of a parcel of open space. Typically, the landowner can maintain trails and existing buildings, but is prohibited from constructing new buildings or roads. The CR is given by the landowner to an organization that agrees to monitor the land to assure long-term compliance.
In most cases, a CR is used to protect land which is privately owned, and the CR is often given to a town. In this way, the town's conservation commission can monitor the land and make sure that future owners of the parcel understand their responsibility to keep the land undeveloped.