Is 3639 Gattis School Rd, Round Rock, Tx 78664 over-assessed?

Public Texas records put its assessment at $9,600,938 — about 39.8% above the comparable appraisals its value should track, an estimated $3,817,701 over-assessment. We verify it by hand before saying you have a case.

How much could a property tax appeal save on this property?

An estimated $83,989 per year, using an estimated Texas composite millage rate applied to the over-assessment. Actual savings depend on the final reduction.

What does it cost to appeal?

Nothing upfront. WinningAppeals is paid only if your value comes down — the founding-year rate is 10% of your first-year savings. If the value doesn't move, you owe nothing.

Over-assessed vs. comparables

3639 Gattis School Rd, Round Rock, Tx 78664

Round Rock, 78664 · Williamson County, Texas · commercial property · 21,785 sq ft · Texas Tax Code §42.26

$83,989estimated overpaid in property tax / year

This property's assessment sits above the comparable basis its tax bill should follow — a strong opening for an appeal.

What the public records show

Williamson public rollTexas

Current assessment$9,600,938

What the comparable appraisals support$5,783,237

Estimated over-assessment$3,817,701 · 39.8%

Comparable basis$265/SF

Estimated tax saved / year$83,989

Straight from the public Texas roll. The estimated saving applies an estimated composite millage to the over-assessment. We adjust comparables for size, age, and location before we say a word about your property — and we never name owners.

The comparable basis

The 8 comparable appraisals behind the number

Each comparable is adjusted toward this property for size and age, then we take the median. Owners are never named — only the public assessment figures matter.

Comparable assessment $/SFAdjusted $/SFSizeBuilt

$36$3621,915 SF2024

$79$7921,532 SF2024

$167$16822,900 SF2022

$202$20323,468 SF2022

$234$23522,293 SF2022

$298$29620,111 SF2022

$392$39221,658 SF2022

$436$43321,460 SF2021

Why this is the lever

Texas Tax Code §42.26

Under §42.26, if a property is appraised above the median appraised value of a reasonable number of comparable properties (adjusted for size, age, and location), the value must be brought down to that median.

How a Texas commercial property tax appeal works →

Your free review

See the full comparable analysis and start your review

The number above is free. Enter your email and we'll send the full breakdown for 3639 Gattis School Rd, Round Rock, Tx 78664 and tell you, with no obligation, whether it's worth filing. A licensed Texas agent handles everything from there. You pay only if your value comes down.

Nothing due unless we lower your bill.
A licensed Texas agent files and represents you.
Built from Williamson County's own public records.

Other Williamson County properties over the line

3001 Kalahari Blvd, Round Rock, Tx 78665$398,569,533 over 7700 Parmer Ln, Austin, Tx 78729$289,260,240 over 9835 N Lake Creek Pkwy, Austin, Tx 78717$209,442,095 over 1555 University Blvd, Round Rock, Tx 78665$117,745,277 over 14231 N 183A Toll Rd, Austin, Tx 78717$110,546,239 over 2300 Greenlawn Blvd, Round Rock, Tx 78664$94,380,052 over

All Williamson County over-assessments →Texas commercial property tax appeals →