Blog · October 14, 2026 · Oregon
Reading the West Linn Plat Map for a lot
Lots in the city trace back to recorded plats filed with the county, especially near Oregon City.
Main page: Clackamas County, OR GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Checking easements on a house in West Linn? What you want is the West Linn plat map, since it shows lots, streets and easements as approved. This West Linn guide covers: where to request a copy, plat versus tax map, and what to look for on the sheet.
Tracking down the West Linn plat map
For a lot around Barlow, look for the plat book reference on the parcel record; use it to request a copy.
The free map to start with
Begin with the ORMAP statewide tax lot viewer; it includes every tax parcel around Gladstone and Rivergrove. For a parcel near Oregon City, put in a street address, an owner's name or a parcel number, and the matching parcel lights up. For a home near Gladstone, write down the parcel ID while you have it open; each records desk in the county asks for it first.
Reading the legal description
Oregon is laid out under the Public Land Survey System, which means a tract near Milwaukie is described by section, township and range. Each section is nominally a mile square, about 640 acres, and a township holds 36 of them, though real sections near Rivergrove vary in size. Copy the legal description from the record for the parcel near Johnson City before you request a deed or survey.
Before you lean on the lines
The acreage figure is a tax-roll number; only a licensed surveyor establishes the real corners for a parcel near Johnson City. For a parcel near Gladstone, records update in batches, so a deed recorded last month might lag behind.
A quick look at the area
Oregon City serves as the county seat, which is where the courthouse records live. You'll also find Gladstone, Johnson City, and Lake Oswego, each with its own cluster of lots. Roughly 423,173 people live in Clackamas County (Census estimate, 2023) spread over roughly 1,871 square miles. Clackamas County dates to 1843, and some chains of title near Oregon City are long.
When there's no plat
Rural land near Johnson City that was never subdivided is often described by metes and bounds or survey description; look for a recorded survey for land near Oregon City.
When a plat changes
Lots near Johnson City can be combined or reconfigured by a replat, so check for later filings; street vacations near Milwaukie show up in the records too.
Taking the map into the field
The parcel map usually runs in a mobile browser, which helps when you're standing on land near Rivergrove, but coverage can be spotty out of town. A printout of the tract near Oregon City is a good backup.
West Linn, OR: the basics
West Linn sits in Clackamas County, Oregon, which means parcel data comes from the county. For a home near Johnson City, City or town hall handles things like zoning, permits and utilities for lots inside the boundary, while the county keeps the tax map. Lots just outside the town limits out by Gladstone often falls under county rules instead.
Recorded plat or GIS layer
If the tax map and plat differ near Oregon City, the recorded plat and a survey control.
Reading the plat sheet
If you're looking near Rivergrove, the sheet usually includes lot and block numbers, dimensions and bearings, street rights-of-way and easements.
Land on the county line
Clackamas County touches Hood River County, Marion County, Multnomah County, Wasco County, and Washington County; every one of them runs a separate parcel map. Acreage along the edge near Rivergrove may be split across two assessors' files, so look at the neighboring map too. For a tract near Milwaukie, the Platbookmapper state page lists each neighboring county map across Oregon.
Getting a copy
For land near Oregon City, many recorder offices offer an online index, while others require a visit or a request; copy fees are usually small.
Offices that can help
Questions about value or the owner field for land near Rivergrove are handled by the County Assessor, since that office keeps the assessment data. Questions about what you can build around Rivergrove are for the local planning and health departments, depending on whether the land is inside town limits.
Deeds, plats and who keeps them
The map is an index, not the title: recorded deeds, subdivision plats and easements for land near Johnson City sit with the County Clerk. Long-held tracts near Rivergrove may sit on a long string of deeds, and a title company can sort it out if money is changing hands.
Quick answers
What is a replat in West Linn?
For most people, lot splits in West Linn go through the planning office, often with a surveyor's drawing.
What do the dashed lines on a plat mean in West Linn?
In most cases, building on an easement near Lake Oswego is generally restricted; read the plat notes.
What does lot 7, block 3 mean near Oregon City?
Closer to Lake Oswego, lot and block refer to a numbered lot within a block on a recorded subdivision plat, so pull that plat for dimensions.
Where can I find the West Linn plat map?
For most people, recorded plats near Johnson City are filed with the County Clerk; use the plat reference from the deed or parcel record.
Does the parcel map work on a phone in West Linn?
The map near Rivergrove usually works on a phone; load it before you lose coverage near Oregon City.
Open the official Clackamas County, OR parcel map See it in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.