Blog · October 14, 2026 · Oregon
Tualatin Plat Map, Oregon: plats and lots
Lots in Tualatin trace back to recorded plats filed with the county.
Main page: Clackamas County, OR GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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When a deed near Wilsonville says lot and block, you'll need the Tualatin plat map to make sense of it. This Tualatin guide covers: where plats are filed, plat versus tax map, and the details that matter to buyers.
Tracking down the Tualatin plat map
For land around West Linn, the deed usually cites the plat; that makes the request quick.
Where the parcel data lives
Your first stop is the ORMAP statewide tax lot viewer; it includes each assessed parcel from West Linn to Milwaukie. When a rural tract has no street number, zoom in from West Linn until the lines appear, then click inside the one you want. If you're looking near Rivergrove, the record panel typically gives the owner of record, assessed acreage, a parcel ID and often a sale date.
Tualatin and the county around it
Tualatin lies within Clackamas County, Oregon, so its parcels are on the county's map. Local government in Tualatin handles things like zoning, permits and utilities within town limits, while the county keeps the tax map. Land beyond the town limits near Wilsonville often follows county rules instead.
Getting your bearings
Oregon City is the county seat, which is where the courthouse records live. You'll also find Rivergrove, Lake Oswego, Wilsonville, and West Linn, each with its own cluster of lots. Around 423,173 people call Clackamas County home (Census Bureau estimate, 2023) across some 1,871 square miles. Clackamas County was formed in 1843, and some chains of title near Wilsonville are long.
Land outside a subdivision
Rural land near West Linn that was never subdivided may have no plat at all; look for a recorded survey for land near Canby.
Neighboring parcel maps
Clackamas County borders Hood River County, Marion County, Multnomah County, Wasco County, and Washington County, all with their own assessor records. Acreage along the edge near Canby may be split across two assessors' files, so check the neighboring map before you assume the acreage. If the land is near Rivergrove, the Platbookmapper state page lists every neighboring county map for Oregon.
Legal descriptions in Oregon
Oregon uses the Public Land Survey System, so deeds around Wilsonville reference sections and townships. Each section is nominally a mile square, about 640 acres, and a township holds 36 of them, though sections near Canby can be irregular. Write down the legal description for the tract near Rivergrove for any title or survey request.
When a plat changes
Lots near Wilsonville can be combined or reconfigured by a replat, search the index for replats of the same subdivision; vacated streets or alleys also get recorded.
Before you lean on the lines
Listed acreage is an assessed number; just a licensed surveyor establishes the real corners for a parcel near Rivergrove. For a home near West Linn, owner names and values update on a schedule, so a deed recorded last month may not show yet.
How a plat differs from the tax map
Where lines don't match in Tualatin, go with the plat and a surveyor's work.
What a plat shows
Utility or drainage strips on a lot in Tualatin limit where you can build or fence; check the plat notes and any covenants.
Getting answers from the right desk
Recorded documents for a parcel near Rivergrove come from the County Clerk, sometimes only in person. Building or septic questions for a lot near Canby need the planning or permitting office, town or county, depending on location.
Recorded documents worth pulling
When the details count, get the recorded deed from the County Clerk; the parcel map near Rivergrove only summarizes it. Inherited tracts near Lake Oswego may sit on several deeds, and a title company can sort it out before a purchase.
Online indexes and office visits
With a lot near Milwaukie, some counties put plat images online, while others require a visit or a request; small fees are common.
Field tips
The parcel map usually runs in a mobile browser, useful out on a road near Wilsonville, but coverage can be spotty out of town. A printout of the tract near Canby is a good backup.
Questions about the Tualatin plat map
What is a replat for land near Rivergrove?
Good question; combining or splitting lots near Canby usually needs a recorded plat change; ask staff about the process.
Is a plat map a survey near Wilsonville?
In and around Canby, a recorded plat is based on a survey, but the GIS map is not; trust the plat when they differ.
What is a lot and block description near Milwaukie?
Closer to Rivergrove, lot and block refer to a numbered lot within a block on a recorded subdivision plat, so pull that plat for dimensions.
How do I get a copy of a plat in Tualatin?
In most cases, recorded plats near Milwaukie are filed with the County Clerk.
Can I settle a boundary dispute with the map near Rivergrove?
No; boundary questions near Rivergrove need a licensed surveyor, so a fence may sit off the line
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.