Oregon Revised Statutes Property Rights and Transactions § 94.531

(1) The governing body of a city or county is authorized to recognize a severable development interest in real property. The governing body of the city or county may establish a system for the purchase and sale of development interests. The interest transferred shall be known as a transferable development credit. A transferable development credit shall include the ability to establish in a location in the city or county a specified amount of residential or nonresidential development that is different from development types or exceeds development limitations provided in the applicable land use regulations for the location. All development authorized or approved using transferable development credits shall comply with the land use planning goals adopted under ORS 197.225 and the acknowledged comprehensive plan.

(2) The ability to develop land from which credits are transferred shall be reduced by the amount of the development credits transferred, and development on the land to which credits are transferred may be increased in accordance with a transfer system formally adopted by the governing body of the city or county.

(3) The holder of a recorded mortgage encumbering land from which credits are transferred shall be given prior written notice of the proposed conveyance by the record owner of the property and must consent to the conveyance before any development credits may be transferred from the property.

(4) A city or county with a transferable development credit system shall maintain a registry of all lots or parcels from which credits have been transferred, the lots or parcels to which credits have been transferred and the allowable development level for each lot or parcel following transfer.

(5) A city or county, or an elected official, appointed official, employee or agent of a city or county, shall not be found liable for damages resulting from any error made in: