Loading

Oregon Historical County Records Guide

Clackamas 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.

Records at the Oregon State Archives:
Index to Plat Books, vol. 1, 1851-n.d. (1 volume);
Lake Oswego Plat, 1888 (1 plat);
Oregon City Lot Purchase Register [Town Lots], 1850 (1 volume);
Plat Book Index [includes land descriptions, land claim information, and related transcribed documents], ca.1851 (1 volume);
San Francisco Plat [filed in Oregon City-photocopy], 1850 (1 plat).

Records at the Clackamas County Clerk's Recording Office Suite 110, Public Research Area:
Partition Plat Index [alphabetical and numerical], 1990-1999 (1 binder);
[Partition Plat], no. 90.001-2007.060029, 1990-2007 (12 reels of microfilm);
[Partition Plats], no. 90.001-2002.106, 1990-2002 (3 inches of microfiche);
[Plat Partitions Index-A to O], 1990-1995 (1 volume);
Plat Partitions [Index-P to Z], 1990-1995 (1 volume);
[Plats-Subdivision], no. 1-3755, 1850-2002 (10 reels of microfilm);
[Plat-Subdivision], no. 1-3367, 1850-1997 (2 inches of microfiche);
[Subdivision Ordinances & Regulations-includes partition information], 1974 (3 sheets of microfilm jackets);
[Subdivision Plats], no. 3569-3755, 1999-2002 (2 inches of microfiche).

Records at the Clackamas County Central Utility Plant Warehouse, Recording Records Storage Area:
[Partition Plats-original], no. 90.001-2006.119628, 1990-2006 (ca.2500 plats);
Plat Index [Subdivision-includes condominiums], 1850-2006 (9 volumes);
[Subdivision Plats-original], no. 1-4050, 1850-2008 (4050 plats).

Records at the Clackamas County Development Services Building, Planning and Zoning Office, File and Library Room 212:
Clackamas County Subdivision and Partitioning Ordinance, 1974 (1 volume);
Plats [Subdivision Case Files], no. 3688-4352, 1998-present (24 cu.ft.);
Subdivision & Partition Ordinance, 1974 (1 binder);
Subdivision Regulations, 1955 (1 binder);
Zoning and Development Ordinance [includes subdivision and partition information], 1960 (1 binder).

Records at the Clackamas County Development Services Building, Planning and Zoning Office, Room 219:
Pre-1990 [Land Use Action Case File Rolodex Index], ca.1960-1990 (1 cu.ft.);
[Subdivision Case Files Rolodex Index], n.d. (.60 cu.ft.).

Records at the Clackamas County Development Services Building, Planning and Zoning Office Suite 225:
[Land Use Action Case Files-includes partitions, zone changes, comprehensive plan amendments, conditional uses, and other actions], 2008-present (84 cu.ft.);
Recorded Subdivision & Partition Plats [Index], 1850-2008 (1 binder);
Subdivision Plats [Reference Copies], no. 1-4251, 1850-ca.2011 (ca.4251 plats).

Records at the Clackamas County Development Services Building, Planning and Zoning Office Suite 225, Public Research Area:
[Land Use Action Case Files-includes partitions, zone changes, comprehensive plan amendments, conditional uses, and other actions-chronological arrangement], 1973-2000 (15 feet of microfiche);
[Land Use Action Case Files-includes partitions, zone changes, comprehensive plan amendments, conditional uses, and other actions-township and range arrangement], 1960-2000 (25 feet of microfiche);
[Major Partitions-Case Files], 1975-1981 (1 inch of microfiche);
Partitions [Case Files], 1974-1979 (14 inches of microfiche);
[Partitions-Plats], no. 90.001-97.150, 1990-1997 (8 inches of microfiche);
Plats [Subdivision], no. 1-3268, 1850-1996 (24 inches of microfiche);
Subdivisions [Planning Case Files], no. 2149-3683, ca.1976-2001 (10 inches of microfiche).

Records at the Clackamas County Development Services Building, Surveyor's Office File Room 311:
County Recorder's Original Silver Halide [Major Partition Plats], no. 1-113, 1975-1983 (1 inch of aperture cards);
County Recorder's Original Silver Halide [Partition Plats], 1990-1997 (24 inches of aperture cards);
County Recorder's Original Silver Halide [Subdivision Plats], no. 1-3368, 1850-1997 (4 feet of aperture cards);
Index to File Drawers A Thru Z [indexes A to Z Letter Series maps, DTM plats, LP corner maps, and some surveys], ca.1853-ca.1985 (1 binder);
Major Partitions [Plats], no. 1-113, 1875-1983 (1 inch of microfilm jackets);
[Miscellaneous Maps and Plats-formerly "A-Z Letter Series," now "SN series"-includes road, bridge, subdivision, corner restoration, survey, and miscellaneous maps and plats], ca.1853-ca.1990 (ca.2000 maps and plats);
Partition Plats, 1990-1997 (12 inches of microfilm jackets);
Partitions [Plats], no. 1990.001-2013.040, 1990-present (ca.2600 plats);
Plats Numerical [Subdivision Index], 1850-1981 (1 binder);
Plats [Subdivision], no. 1-3572, 1850-1999 (ca.3572 plats);
Subdivision Plats, no. 3573-4362, 1999-present (ca.800 plats); no. 1-3325, 1850-1997 (3 feet of microfilm jackets);
Subdivision Plat Vacation Books [includes road vacations], no. 1-2632, 1869-1983 (4 volumes).

Records at the Clackamas County Development Services Building, Surveyor's Office Suite 325, Public Research Area:
Major Partitions [Plats], no. 1-113, 1975-1983 (.50 inch of microfiche);
Partitions Plats, no. 90.001-97.056, 1990-1997 (8 inches of microfiche);
Subdivision Plats, no. 1-3325, 1850-1997 (17 inches of microfiche).

Records at the Clackamas County Development Services Building, Engineering Office Plotter Room 345:
County Roads [Engineering Case File Card Index], ca.1853-n.d. (.50 cu.ft.);
Partition Plats [Major], no. 1-113, 1975-1983 (1 inch of microfiche);
Partition Plats, no. 90.001-97.150, 1990-1997 (12 inches of microfiche);
Road Files By Number [Road Engineering Case Files-includes copies of deeds, road vacations, subdivision and partition plats, maps, plans, easements, legal descriptions, and related records], no. 12001-72003, ca.1853-ca.1997 (40 inches of microfiche);
Subdivision Plats, no. 1-3368, 1850-1997 (26 inches of microfiche).

Records at the Clackamas County Development Services Building, Assessment and Taxation Office Suite 135, Cartography Area:
Major Part. [Partition Plats], 1975-1983 (ca.113 plats);
Plat Sepia [Subdivision], no. 1-4050, 1850-2008 (4050 plats);
Town Lots [includes present owner information-with index], vol. 1-3, ca.1920-ca.1950 (3 volumes).

Records at the Clackamas County Archives:
Index to Donation Land Claims [also includes subdivision additions index], n.d. (1 volume);
Record of Town Plats [indexes volumes 1-23], n.d. (1 volume).

Records at the Clackamas County Archives, Security Microfilm Storage:
Land Use Files [includes subdivision and partition case files], 1950-2009 (493 reels of microfilm).

Records at the Museum of the Oregon Territory, Second Floor Exhibit Area:
Plat of Oregon City, 1850 (1 plat);
Plat of San Francisco [original-filed in Oregon City], 1850 (1 plat).

Records at the Clackamas County Web Site:
CCSIS [Clackamas County Surveyor Information System-GIS database-includes corner survey, Donation Land Claim, private survey plat, subdivision plat, partition plat and related information], n.d.-present (Internet);
Zoning and Land Development Ordinance [includes subdivision and partition information], n.d.-present (Internet).

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

© 2014 State of Oregon All Rights Reserved​