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Oregon Historical County Records Guide

Washington County Records Inventory

Land Subdivision Records

1850-[ongoing]

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.

The searchable iSpirits research tool includes images of subdivision, partition, and condominium plats. Current Planning Section Land Use Files that are available as imaged documents in the office are also stored as security microfilm at contracted off-site storage.

Records at the Oregon State Archives:
Fairgrounds Plat, 1868 (.05 cu.ft.);
Gaston Plat, 1889 (.05 cu.ft.).

Records at the Public Services Building, Room 202, Survey Section Vault:
Condominium [Plats], 1973-present (8 cu.ft.);
Partition Plats, 1990-present (13 cu.ft.);
Plats [Record of Town Plats-Subdivision], vol. 2-3, 1893-1910 (2 volumes);
Record of Town Plats [Subdivision], vol. 1, ca.1860-1893 (1 volume);
Subdivision Plats [Surveyor's Copy], ca.1860-present (50 cu.ft.).

Records at the Public Services Building, Room 202, Survey Section Workroom:
[Subdivision Alphabetical Rolodex Index], n.d. (.25 cu.ft.).

Records at the Public Services Building, Suite 350, Current Planning Section Office, Microfilm Alcove:
Land Use Files [Case Files-includes subdivision and partition actions], 1959-1972 (31 reels of microfilm); 1973-1994 (80 inches of microfiche);
Land Use Files [Subdivision], 1950-1969 (1 reel of microfilm).

Records at the Public Services Building, Suite 350, Current Planning Section Office:
[Land Use Files-Case Files-includes subdivision and partition actions], ca.2000-present (350 cu.ft.).

Records at the Public Services Building, Suite 130, Recording Division Office Area:
Miscellaneous [Plat Book-Subdivision], vol. 1-31, ca.1860-1972 (3 reels of microfilm).

Records at the Public Services Building, Suite 240, Assessment & Taxation Department, Cartography Division Office:
Subdivisions [Plats-alphabetical], ca.1860-ca.1998 (24 inches of microfiche).

Records at the Washington County Historical Records Vault:
Condo Book [Condominium Plats], vol. 7, 1985-1987 (1 volume);
Copies of Plats [Subdivision], vol. 1, 1868-1893 (1 volume);
Index to Town Plats and Cemetery Plats [indexes vol. 1-8], ca.1860-n.d. (1 volume);
Index to Town Plats and Cemetery Plats [indexes vol. 1-21], vol. 1, ca.1860-n.d. (1 volume);
Record of Condominiums, vol. 2-5, 1979-12981 (3 volumes);
Record of Town Plats [Subdivision], vol. 12, 1947-1949 (1 volume);
[Subdivision Plats-copies in paper covers], vol. 3-6, 1909-1913 (4 volumes);
[Subdivision Plats-in boxes], 1984-1997 (16 cu.ft.);
Subdiv. Plats Mylar [Subdivision], 2000-2001 (2 cu.ft.).

Records at the Walnut Street Center Complex, Building E, County Records Center, Map Cabinet Area:
Condominium Plats, vol. 8-20, 1987-2003 (4 cu.ft.);
Plats Condominium, 2003-2008 (4 cu.ft.);
Plats Partition, 2006-2010 (3 cu.ft.);
Plats Subdivision, 2004-2008 (3 cu.ft.);
Record of Condominium, vol. 1, 1973-1977 (1 volume); vol. 6, 1981-1985 (1 volume);
Record of Town Plats [title varies], vol. 1, ca.1860-ca.1893 (1 volume); vol. 4-11, 1910-1947 (8 volumes); vol. 13-56, 1949-1984 (44 volumes).

Records at the Walnut Street Center Building, Second Floor, Survey Section Road Survey Unit Office Area:
VAC [Road and Subdivision Vacations and Dedications], ca.1950-2004 (6 inches of microfiche).

Records at the Washington County Contracted Off-site Microfilm Storage:
Subdivision Case Files, 1950-1994 (ca.85 reels of microfilm).

Records at the Washington County Contracted Off-site Records Storage:
Subdivision Development Case Files, 1995-1999 (27 cu.ft.).

Records at the Washington County Museum, Research Library and Archives:
Cities [Subdivision and Town Plats], n.d.-ca.1945 (1 volume);
[Miscellaneous Maps and Plans-includes land claim, Sanborn insurance, topographical, transportation, vicinity, subdivision, and other topics], ca.1850-ca.1985 (ca.1500 maps);
Subdivisions A-C [Plats-alphabetical arrangement], ca.1860-ca.1958 (1 volume);
Subdivisions D-K [Plats-alphabetical arrangement], ca.1860-ca.1958 (1 volume);
Subdivisions L-R [Plats-alphabetical arrangement], ca.1860-ca.1958 (1 volume);
Subdivisions S-Z [Plats-alphabetical arrangement], ca.1860-ca.1958 (1 volume).

Records at the Washington County Web Site:
Community Development Code [includes comprehensive plan, zoning and subdivision and partition information], n.d.-present (Internet);
County Code [includes land division information], n.d.-present (Internet);
Development Project Case File Search Tool [Searchable Database-includes subdivision and partition case documents], n.d.-present (Internet);
Plats Search Tool [Subdivision, Partition, and Condominium Plats-Searchable Database], n.d.-present (Internet).

Oregon Secretary of State • 136 State Capitol • Salem, OR 97310-0722

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