Oregon Revised Statutes Property Rights and Transactions § 92.025

(1) A person may not sell a lot in a subdivision or a parcel in a partition until the plat of the subdivision or partition has been acknowledged and recorded with the recording officer of the county in which the lot or parcel is situated.

(2) A person may not sell a lot in a subdivision or a parcel in a partition by reference to or exhibition or other use of a plat of the subdivision or partition before the plat for the subdivision or partition has been so recorded. In negotiating to sell a lot in a subdivision or a parcel in a partition under ORS 92.016 (1) and (2), a person may use the approved tentative plan for the subdivision or partition.

(3) Notwithstanding subsections (1) and (2) of this section, the governing body of a city or county may enact an ordinance waiving the requirement that parcels created in excess of 80 acres be shown on a partition plat. Nothing in this subsection shall exempt a local government from minimum area requirements established in acknowledged comprehensive plans and land use regulations.