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3509 GATTIS SCHOOL RD, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath2,479 sqftBuilt 1979

Property at a Glance

This home is estimated between $395,058 and $1,237,205, with a best estimate of $575,758. That places the property below the R575583D - RR Rual Sub 122 & Gattis School Rd Area median of $734,399, in a neighborhood that appreciated 3.8% over the past year.

Estimated Value Range

$395,058 $1,237,205
Best Estimate
$575,758
WCAD Value
$2,024,427
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in R575583D - RR Rual Sub 122 & Gattis School Rd Area. The estimated range of $395,058 and $1,237,205 should be treated as a rough guide.

Comparable Properties (5)

3473 GATTIS SCHOOL RD, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 3 bath 2,188 sqft Built 1977
Raw Value $1,089,769
Adjusted Value $1,183,398

Adjusted +$93,654 for 291 sqft more living space and -$25 for being older. Net adjustment: +$93,629.

3525 GATTIS SCHOOL RD, ROUND ROCK, TX 78664
0.00 mi 94% similar Same subdivision
3 bed 2 bath 1,687 sqft Built 1980
Raw Value $982,299
Adjusted Value $1,237,205

Adjusted +$254,893 for 792 sqft more living space and +$13 for being newer. Net adjustment: +$254,906.

5 bed 3 bath 2,415 sqft Built 2018
Raw Value $385,211
Adjusted Value $406,299

Adjusted +$20,597 for 64 sqft more living space and +$491 for being newer. Net adjustment: +$21,088.

3 bed 4,193 sqft Built 1977
Raw Value $1,127,408
Adjusted Value $575,758

Adjusted -$551,625 for 1,714 sqft less living space and -$25 for being older. Net adjustment: -$551,650.

5 bed 2 bath 2,423 sqft Built 2018
Raw Value $376,544
Adjusted Value $395,058

Adjusted +$18,023 for 56 sqft more living space and +$491 for being newer. Net adjustment: +$18,514.

The Neighborhood

This home is valued 175.7% above the R575583D - RR Rual Sub 122 & Gattis School Rd Area median of $734,399. With 213 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 3.8% over the past year.

R575583D - RR Rual Sub 122 & Gattis School Rd Area

outlier high
213 Properties
$734,399 Median Value
+3.8% YoY Change
4% Have Pool
68% Have Garage
This Home
$2,024,427
Median
$734,399

This home is +175.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $34,036 across all districts. With a homestead exemption claimed, that drops to $32,436 — saving $1,600 per year. That's $2,703 per month a buyer should budget. The assessed value increased +33.9% vs the subdivision average of +3.8%. This above-average increase gives a protest opportunity score of 100 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$16,894
Round RockCity0.3720%$7,037
Williamson CountyCounty0.3694%$6,989
Austin Community Collegespecial0.1034%$1,956
Williamson County FM/RdCounty0.0443%$839
Upper Brushy Creek WCIDWater0.0170%$322
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$34,036
100 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $575,758 would pay approximately $3,594 per month (principal and interest only, excluding taxes and insurance).

Data sourced from Williamson County Appraisal District (WCAD), Texas Education Agency (TEA), and Federal Reserve Economic Data (FRED). Assessment values reflect the appraisal district's estimate, not market sale prices. Report generated 4/18/2026.

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