Oregon Historical County Records Guide
Columbia County Records Inventory
Land Subdivision Records
Series documents the subdividing and partitioning of land within the county. Records include survey notes, correspondence, photographs, satisfaction of agreements, maps of subdivided and partitioned land, and contracts and permits. Information includes subdivision names; lot, street, and alley dimensions; and township, range, and section numbers of land to be subdivided or partitioned.
Subdivision plats recorded before 1909 were recorded in the Deed Record. See Deeds and Indexes.
Records at the Columbia County Courthouse Annex, Clerk's Office:
Index of Town Plats & Subdivisions [alphabetical], n.d. (1 binder);
[Plat Index-includes subdivisions, partitions, and vacations], 1990-present (1 volume);
Plats [Subdivision], no. A1-A186B, 1909-1988 (2 inches of aperture cards).
Records at the Columbia County Courthouse Annex, Vault:
Index of Town Plats and Subdivisions [indexes plats in cabinets and deed books], ca.1889-ca.1990 (1 volume);
[Subdivision and Partition Plats], 1909-present (ca.1400 plats).
Records at the Columbia County Courthouse Annex, Land Development Services Office:
Old Subdivision & Partitioning Ordinance, 1963-1984 (1 binder);
[Planning and Building Case Files-includes subdivision and partition actions-by township and range], ca.1978-present (ca.450 cu.ft.);
S.P.O. Legislative HX [Subdivision and Partition Ordinance Amendments], 1974-2001 (1 binder);
Subdivision and Partitioning Ordinance, ca.1992-ca.2000 (1 binder).
Records at the Columbia County Courthouse Annex, Assessor's Office Break
Index to Town Lots, vol. 1, ca.1867-1913 (1 volume);
[Subdivision Lot Ownership Register], ca.1889-ca.1957 (2 volumes).
Records at the Columbia County Courthouse Annex, Surveyor's Office:
Columbia County Survey Index [indexes county surveys, road surveys, subdivision and partition plats, boundary line maps, highway maps, and miscellaneous maps], ca.1873-present (1 binder);
[Partition Plats], 2008-present (ca.100 plats);
Plat Book [Subdivision], vol. 7, 2006-present (ca.50 plats).
Records at the Columbia County Courthouse Annex, Surveyor's
Old Jail Storage Area:
[Miscellaneous Recorded Maps and Survey Plats-includes town, subdivision, and survey plats, district maps, building plans, road plats, aerial photographs, sewer lines, topographical maps, and other related records and subjects-rolled], ca.1937-present (ca.600 maps and drawings);
Partition Plats, 1990-2007 (ca.700 plats);
Plat Book [Subdivision], vol. 1-6, ca.1909-ca.2005 (ca.300 plats).