Blog · October 14, 2026 · Washington
Using the Union Gap Plat Map
Lots in Union Gap trace back to recorded plats filed with the county.
Main page: Yakima County, WA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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When a deed near Yakima says lot and block, you'll need the Union Gap plat map to make sense of it. In this Union Gap guide: where plats are filed, plat versus tax map, and what to look for on the sheet.
The Union Gap plat map: start here
For land around Yakima, look for the plat book reference on the parcel record; that makes the request quick.
The free map to start with
Begin with the Yakima County parcel viewer; it maps each tax parcel in the county, Moxee included. Near Wapato, type a street address, an owner's name or a parcel number, then pick the result to center the map on it. For a home near Moxee, the parcel card normally shows the owner of record, acreage on the tax roll, a parcel ID and sometimes recent sales.
A quick look at the area
Yakima is the county seat, where most land records are kept. Smaller places on the map include Moxee, Selah, and Wapato, each with its own cluster of lots. Around 256,643 people live in Yakima County (Census Bureau estimate, 2023) on about 4,295 square miles. Yakima County was formed in 1865, and some chains of title near Selah are long. Features like Wenatchee National Forest help you orient on the aerial around Harrah.
Where the recorded documents are
The map is an index, not the title: recorded deeds, subdivision plats and easements covering ground around Selah are filed with the County Auditor. For a tract near Yakima, have ready the book and page listed on the parcel record to skip a name search.
Field tips
Most viewers work in a phone browser, which helps when you're standing on land near Harrah, so load it before you lose signal. A saved image of the lot near Harrah and its lines keeps working without signal.
Sections, lots and bearings
Washington follows the Public Land Survey System, which means a tract near Wapato 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 Harrah vary in size. Copy the legal description from the record for the parcel near Selah when you talk to a surveyor.
Union Gap, WA: the basics
Union Gap sits in Yakima County, Washington, and the county assessor maps its lots. For acreage around Zillah, the municipality handles things like zoning, permits and utilities for lots inside the boundary, while the county keeps the tax map. Land beyond the city limits near Yakima often follows county rules rather than the town's.
Metes and bounds instead
Acreage around Harrah outside a subdivision is often described by metes and bounds or survey description; the deed and any recorded survey describe it instead.
Recorded plat or GIS layer
The Yakima County parcel viewer draws parcels for taxes, but the recorded plat is what the deed relies on.
Replats and vacations
An amended plat may change lots around Moxee, so check for later filings; vacated streets or alleys also get recorded.
Who handles what
Anything recorded against property around Harrah are with the County Auditor, usually searchable by name or document number. Questions about what you can build around Harrah go to planning, building or health offices, town or county, depending on location.
Details on the Union Gap plat map
With a lot near Zillah, the sheet usually includes lot and block numbers, dimensions and bearings, street rights-of-way and easements.
Next door to Yakima County
Yakima County borders Benton County, Grant County, King County, Kittitas County, and Klickitat County, and each of those keeps its own parcel map. A tract near the line by Moxee can show up in two county records, so look at the neighboring map before you assume the acreage. If the land is near Selah, our state page links each bordering county map across Washington.
Limits of the parcel data
Listed acreage is an estimate; just a licensed surveyor can set the real corners for a parcel near Yakima. For a parcel near Moxee, owner names and values update on a schedule, so a deed recorded last month might lag behind.
Requesting the plat
If you're looking near Selah, many recorder offices offer an online index, otherwise call or visit with the reference; small fees are common.
Frequently asked
Can lots near Zillah be combined?
Short answer: lot splits in Union Gap go through the planning office, often with a surveyor's drawing.
How is a plat different from the parcel map near Selah?
It depends, but the plat near Yakima is recorded, while the GIS layer is an approximation.
How do I get a copy of a plat in Union Gap?
It depends, but copies come from the County Auditor, often through an online index; use the plat reference from the deed or parcel record.
How do I read lot and block in Union Gap?
For acreage around Zillah, lot and block refer to a numbered lot within a block on a recorded subdivision plat, so pull that plat for dimensions.
What's the tax parcel number used for near Zillah?
The parcel ID identifies one tax parcel near Moxee; you'll see it in the viewer and on tax statements.
Open the official Yakima 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.