Oregon Revised Statutes Chapter 215 § 215.780 — Minimum lot or parcel sizes; land division to establish a dwelling;

Minimum lot or parcel sizes; land division to establish a dwelling; recordation. (1) Except as provided in subsection (2) of this section, the following minimum lot or parcel sizes apply to all counties: (a) For land zoned for exclusive farm use and not designated rangeland, at least 80 acres; (b) For land zoned for exclusive farm use and designated rangeland, at least 160 acres; and (c) For land designated forestland, at least 80 acres. (2) A county may adopt a lower minimum lot or parcel size than that described in subsection (1) of this section in any of the following circumstances: (a) When the county can demonstrate to the Land Conservation and Development Commission that the county can adopt a lower minimum lot or parcel size while continuing to meet the requirements of ORS 215.243 and 527.630 and the land use planning goals adopted under ORS 197.230. (b) To divide by partition an area of land zoned for forest use to create a parcel for a dwelling that has existed since before June 1, 1995, subject to the following requirements: (A) The parcel created may not be larger than five acres, except as necessary to recognize physical factors such as roads or streams, in which case the parcel may not be larger than 10 acres; and (B) The parcel that does not contain the dwelling is not entitled to a dwelling unless subsequently authorized by law or goal and the parcel either: (i) Meets the minimum lot or parcel size of the zone; or (ii) Is consolidated with another parcel, and together the parcels meet the minimum lot or parcel size of the zone. (c) To divide by partition an area of land zoned for mixed farm and forest use to create a parcel for a dwelling that has existed since before June 1, 1995, subject to the following requirements: (A) The parcel created may not be larger than five acres, except as necessary to recognize physical factors such as roads or streams, in which case the parcel may not be larger than 10 acres; (B) The parcel that does not contain the dwelling is not entitled to a dwelling unless subsequently authorized by law or goal and the parcel either: (i) Meets the minimum lot or parcel size of the zone; or (ii) Is consolidated with another parcel, and together the parcels meet the minimum lot or parcel size of the zone; (C) The minimum tract eligible under this paragraph is 40 acres; (D) The tract must be predominantly in forest use and that portion in forest use qualified for special assessment under a program under ORS chapter 321; and (E) The remainder of the tract does not qualify for any uses allowed under ORS 215.213 and