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Assessor Approval for Plats and Tax Lot Boundary Changes
Under Oregon law assessors approve all plats (subdivision, partition or condominium) or changes in tax lot lines.
Service
Survey
Transportation
Cooperative CORS Data - Base Station - JIME
The National Oceanic and Atmospheric Administration Continuously Operating Reference Stations Network provide Global Navigation Satellite System data, supporting 3-D positioning, meteorology, space weather and geophysical applications.
Information
Survey
Cooperative CORS Data - Base Station Data Files
Cooperative CORS Data - Base Station; LUT app
County resource
Survey
Get Involved
The Sheriff’s Office depends on our amazing volunteers to help us provide the best service possible to our community. There are countless ways to get involved as a volunteer at the Sheriff’s Office!
Service
Professional Standards Division
Safety & Justice
Monument Boxes
Monument boxes are required for all public centerline monuments.
Information
Survey
Transportation
Partition Plat Checking Calculator
Calculator to estimate partition plat checking costs.
County resource
Survey
Plat Review
Plats are most often viewed to determine dimensions of a lot within a platted area.
Service
Survey
Business
Public Land Corner
Public land corners mark the boundary corners of public and private land. These are usually at the section corners, one-quarter section corners and donation land section corners.
Information
Survey
Retired Advisory Bodies
The Homeless Solutions Advisory Council fulfills the role and replaces the former Continuum of Care (CoC) board and Homeless Plan Advisory Committee for Washington County. See prior CoC policies, CoC meeting materials, and HPAC meeting materials.
Information
Subdivision Plat Checking (Post-monumented) Calculator
Calculator to estimate subdivision plat checking (Post-monumented) costs.
County resource
Survey
Subdivision Plat Checking (Pre-monumented) Calculator
Calculator to estimate subdivision plat checking (Pre-monumented) costs.
County resource
Survey
Supportive Housing Services Funding Opportunities
View regional Supportive Housing Services funding announcements and a list of qualifying service providers that are eligible for funding.
Information
Supportive Housing Services Plans and Reports
Learn more about plans, policies, and reports related to the Supportive Housing Services program.
Information
Survey Explorer
Contains County Surveyor's Office records. Includes address, tax lot, survey, plat, public land corner, benchmark, section map, tax map, county road, road dedication and vacation, geodetic control point, and donation land claim data.
County resource
Survey