Blog · October 14, 2026 · Washington
Reading the Quincy Plat Map for a lot
Lots in Quincy trace back to recorded plats filed with the county.
Main page: Grant County, WA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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If a legal description for land in Quincy cites a lot number, look up the Quincy plat map it refers to. What this Quincy guide covers: where to request a copy, plat versus tax map, and what to look for on the sheet.
Tracking down the Quincy plat map
For a subdivision near Mattawa, the deed or parcel record often names the subdivision and plat reference; use it to request a copy.
Opening the official parcel viewer
Begin with the Washington Current Parcels layer in ArcGIS Map Viewer; it includes each assessed parcel around Grand Coulee and Ephrata. For a parcel near George, type a street address, an owner's name or a parcel number, and the matching parcel lights up. For land near Mattawa, the record panel normally shows the owner of record, assessed acreage, the parcel number and sometimes recent sales.
Land on the county line
Grant County meets Adams County, Benton County, Douglas County, Franklin County, and Kittitas County; every one of them runs a separate parcel map. Ground near Mattawa that runs to the line may show up in two county records, so look at the neighboring map as well. For acreage around Grand Coulee, the Platbookmapper state page links every bordering county map across Washington.
Quincy, WA: the basics
Quincy is part of Grant County, Washington, which means parcel data comes from the county. For a tract near Grand Coulee, City or town hall handles matters such as zoning, permits and utilities inside its limits, while the county keeps the tax map. Acreage past the town limits toward Electric City generally follows county rules instead.
Metes and bounds instead
Acreage around Grand Coulee outside a subdivision may have no plat at all; the deed and any recorded survey describe it instead.
Recorded plat or GIS layer
The tax map on the Washington Current Parcels layer in ArcGIS Map Viewer is a summary, while the recorded plat is the legal document.
When a plat changes
An amended plat may change lots around Mattawa, search the index for replats of the same subdivision; vacated streets or alleys also get recorded.
Getting your bearings
Ephrata is the county seat, which is where the courthouse records live. You'll also find George, Electric City, and Grand Coulee, where town lots give way to larger tracts. About 102,678 people call Grant County home (Census estimate, 2023) across some 2,680 square miles. Grant County was organized in 1909, and some chains of title near Mattawa are long. Landmarks such as Columbia National Wildlife Refuge make handy reference points on the map near Grand Coulee.
Details on the Quincy plat map
Easements on the plat near Moses Lake stay with the land when it sells; read the notes on the sheet.
Which office to call
For assessment questions about property around Grand Coulee are handled by the County Assessor, which maintains the tax roll. Questions about what you can build around Ephrata are for the local planning and health departments, and the answer depends on jurisdiction.
Deeds, plats and who keeps them
The map is an index, not the title: deeds, subdivision plats and easements for land near Ephrata sit with the County Auditor. Inherited tracts around Grand Coulee may sit on several deeds, and a title company can sort it out on a real sale.
What the map can't tell you
Listed acreage is an assessed number; just a licensed surveyor sets the real boundary on land around George. Owner names and values update on a schedule, so a fresh transfer around Ephrata may not show yet.
Online indexes and office visits
For a parcel near Ephrata, many recorder offices offer an online index, otherwise call or visit with the reference; small fees are common.
Taking the map into the field
The parcel map usually runs in a mobile browser, which helps when you're standing on land near Mattawa, but coverage can be spotty out of town. A screenshot of the parcel near Mattawa with its ID helps when you meet an owner or agent.
How land is described here
Washington uses the Public Land Survey System, which means a tract near Moses Lake is described by section, township and range. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though corrections make some sections near Grand Coulee odd-sized. Copy the legal description from the record for the parcel near Ephrata for any title or survey request.
Quick answers
How far back do plats go near Grand Coulee?
In most cases, the County Auditor can say what's available; call before you visit.
How do I get a copy of a plat in Quincy?
Short answer: copies come from the County Auditor, often through an online index.
Is a plat map a survey around Ephrata?
In most cases, the plat near Electric City is recorded, while the GIS layer is an approximation.
Can I build on an easement in Quincy?
For property near Electric City, dashed lines often mark easements or building lines, so check before you build.
What's a legal description near George?
Closer to Electric City, deeds use lot and block, metes and bounds or survey descriptions, and the parcel record often summarizes it.
Open the official Grant 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.