Blog · October 14, 2026 · Texas
The Katy GIS Map and the county parcel viewer
Parcel data for Katy comes from the county, and the viewer is free.
Main page: Waller County, TX GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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When land near Pine Island catches your eye, the Katy GIS map lays out parcel boundaries plus basic tax data. Covered here for Katy: where that map lives, the fastest ways to search, and the limits worth knowing.
Finding a lot on the Katy GIS map
In most places the county maintains the parcel layer, and for Katy that means the Waller CAD interactive map.
Where the parcel data lives
Your first stop is the Waller CAD interactive map; it covers each assessed parcel from Hempstead to Brookshire. For property near Pattison, enter a street address, an owner's name or a parcel number, and the viewer zooms to the match. In and around Pine Island, the record panel typically gives the owner of record, acreage on the tax roll, the parcel number and sometimes recent sales.
Katy and the county around it
Katy sits in Waller County, Texas, which means parcel data comes from the county. With a lot near Brookshire, city or town hall handles things like zoning, permits and utilities for lots inside the boundary, and the county still keeps the parcel and deed records. Lots just outside the town limits out by Brookshire often answers to county rules instead.
Deeds, plats and who keeps them
The map is an index, not the title: recorded deeds, plats and easements covering ground around Brookshire sit with the County Clerk. Long-held tracts around Hempstead can go back through a long string of deeds, so a title company is worth hiring if money is changing hands.
Three ways to find a parcel
Acreage around Pine Island might not have a street number, so pan the aerial and click the lot. If you're looking near Pattison, searching by parcel number never misses, and it carries over to every office in the county.
Land on the county line
Waller County borders Austin County, Fort Bend County, Grimes County, Harris County, and Montgomery County, all with their own assessor records. A tract near the line by Brookshire may show up across two assessors' files, so open the adjacent map too. For a tract near Prairie View, the Platbookmapper state page links every bordering county map for Texas.
Printing and saving
Print or screenshot the parcel near Pattison with its ID visible, so you have it when calling an office.
Browser tips
When the map won't open around Pattison, switch browsers or turn off pop-up blockers; links occasionally change, and our directory page keeps the current one.
Aerials, labels and overlays
Closer to Pattison, look in the layer list for municipal boundaries, floodplain and sometimes zoning; not every viewer has them all.
On site with the map
Most viewers work in a phone browser, handy when you're parked on a road near Hempstead, though signal can drop in rural spots. A screenshot of the parcel near Pattison with its ID is a good backup.
Offices that can help
For assessment questions about property around Brookshire are handled by the appraisal district, since that office keeps the assessment data. Questions about what you can build around Hempstead are for the local planning and health departments, and the answer depends on jurisdiction.
Waller County in a few facts
Hempstead serves as the county seat, where most land records are kept. You'll also find Brookshire, Pattison, and Prairie View, where town lots give way to larger tracts. About 63,553 people live in Waller County (Census estimate, 2023) across roughly 513 square miles. Waller County dates to 1873, which matters when you trace an old farm's title.
Sections, lots and bearings
Tracts outside towns near Prairie View are often described by metes and bounds, which trace the boundary call by call. Town lots near Hempstead are typically described by lot and block, making them easier to find. Write down the legal description for the tract near Hempstead before you request a deed or survey.
Limits of the parcel data
Parcel lines are drawn for taxes, not surveyed, so a tree line near Brookshire may sit a few yards off the line on screen. On ground around Pine Island, records update in batches, so a deed recorded last month might lag behind.
Reading a parcel record
Recent sales on nearby lots in Katy give a rough idea of values; an appraiser is the real authority.
Katy: common questions
How accurate is the parcel map near Prairie View?
It depends, but the map near Pattison isn't a survey, so a licensed surveyor should mark corners.
Does Katy have its own GIS map?
Katy may publish zoning or utility maps separately.
Can I look up a property owner on the map near Hempstead?
It depends, but the parcel record for a lot near Pine Island lists the owner of record, or search by address instead.
What layers does the parcel viewer have around Pine Island?
For property near Hempstead, many viewers offer aerial imagery plus layers like city limits, zoning or flood zones; open the layer list to see what's there.
Which office handles records for land near Pattison?
For land near Hempstead, assessment goes to the appraisal district and deeds to the County Clerk, while zoning questions go to planning
Open the official Waller County, TX 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.