Blog · October 14, 2026 · Washington
Using the Ocean Shores Plat Map
A recorded plat shows how land near Montesano was divided into lots.
Main page: Grays Harbor County, WA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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When a deed near Westport says lot and block, you'll need the Ocean Shores plat map to make sense of it. What this Ocean Shores guide covers: where plats are filed, plat versus tax map, and the details that matter to buyers.
Tracking down the Ocean Shores plat map
For a lot in Ocean Shores, the deed usually cites the plat; bring that to the recorder's office or its online index.
Where the parcel data lives
Your first stop is the Washington Current Parcels layer in ArcGIS Map Viewer; it maps each tax parcel around Cosmopolis and Westport. For a home near Westport, type a street address, an owner's name or a parcel number, and the viewer zooms to the match. Closer to Elma, a pop-up or side panel normally shows the owner of record, acreage on the tax roll, a parcel ID and often a sale date.
Places you'll see on the map
Montesano serves as the county seat, which is where the courthouse records live. Other places on the map include Westport, Hoquiam, Aberdeen, and Cosmopolis, where town lots give way to larger tracts. About 77,290 people live in Grays Harbor County (Census estimate, 2023) across about 1,901 square miles. Grays Harbor County dates to 1854, and some chains of title near Elma are long. Features like Colonel Bob Wilderness help you orient on the aerial around Hoquiam.
Ocean Shores and the county around it
Ocean Shores is part of Grays Harbor County, Washington, which means parcel data comes from the county. If the land is near Westport, city or town hall handles matters such as zoning, permits and utilities inside its limits, and the county still keeps the parcel and deed records. Lots just outside the town limits toward Elma usually follows county rules rather than the town's.
Before you lean on the lines
Acreage on the record is an estimate; only a licensed surveyor can set the real corners on land around Montesano. In and around Aberdeen, owner names and values update on a schedule, so a deed recorded last month may not show yet.
Replats and vacations
Lots near Aberdeen can be combined or reconfigured by a replat, search the index for replats of the same subdivision; vacated streets or alleys also get recorded.
Taking the map into the field
The parcel map usually runs in a mobile browser, handy when you're parked on a road near Hoquiam, though signal can drop in rural spots. A printout of the tract near Westport keeps working without signal.
Recorded plat or GIS layer
Where lines don't match in Ocean Shores, trust the recorded documents over the GIS layer.
Legal descriptions in Washington
Washington uses the Public Land Survey System, so rural legal descriptions near Hoquiam cite section, township and range. A standard section is about one square mile, roughly 640 acres, and a township holds 36 of them, though corrections make some sections near Cosmopolis odd-sized. Write down the legal description for the tract near Hoquiam for any title or survey request.
Land on the county line
Grays Harbor County meets Jefferson County, Lewis County, Mason County, Pacific County, and Thurston County, all with their own assessor records. A tract near the line by Cosmopolis can be split across two assessors' files, so open the adjacent map before you assume the acreage. For a home near Westport, the Platbookmapper state page links every bordering county map across Washington.
Land outside a subdivision
Rural land near Montesano that was never subdivided is often described by metes and bounds or survey description; the deed and any recorded survey describe it instead.
Lots, blocks and easements
With a lot near Westport, the sheet usually includes lot and block numbers, dimensions and bearings, street rights-of-way and easements.
The paper trail behind a parcel
The map is an index, not the title: deeds, plats and easements for land near Hoquiam are filed with the County Auditor. For acreage around Aberdeen, have ready the book and page listed on the parcel record to skip a name search.
Ordering the Ocean Shores plat map
In and around Montesano, many recorder offices offer an online index, otherwise call or visit with the reference; copy fees are usually small.
Which office to call
Recorded documents for a parcel near Aberdeen sit in the index kept by the County Auditor, often with an online index. Questions about what you can build around Westport are for the local planning and health departments, and the answer depends on jurisdiction.
Ocean Shores: common questions
How is a plat different from the parcel map near Cosmopolis?
Short answer: the plat near Elma is recorded, while the GIS layer is an approximation; a surveyor ties it to the ground.
Are old plats online around Elma?
Usually, the County Auditor can say what's available; call before you visit.
What is a lot and block description for land near Westport?
For acreage around Montesano, lot and block refer to a numbered lot within a block on a recorded subdivision plat.
What do the dashed lines on a plat mean for land near Hoquiam?
If you're looking near Westport, dashed lines often mark easements or building lines; read the plat notes.
Does the parcel map work on a phone in Ocean Shores?
The map near Hoquiam usually works on a phone, though rural signal can drop.
Open the official Grays Harbor County, WA 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.