A legal agreement that permanently limits uses of the land to protect its conservation values, often used by land trusts oriented towards environmental conservation.
Greenbelt refers to a zone of protected open space surrounding urban areas, aimed at containing urban sprawl and preserving nature.
Transferable Development Rights (TDRs) allow the transfer of development potential from one parcel of land to another, generally to preserve open space or historic buildings.
A scenic easement is an encumbrance on the title to a property intended to preserve it in a more or less natural or undeveloped state.
