Beta Williamson County, TX only — data and coverage are limited during early access.

3517 GATTIS SCHOOL RD, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed3 bath1,194 sqftBuilt 1980

Property at a Glance

This home is estimated between $286,410 and $1,610,856, with a best estimate of $769,827. That places the property above 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

$286,410 $1,610,856
Best Estimate
$769,827
WCAD Value
$1,092,876
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $286,410 and $1,610,856. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

3525 GATTIS SCHOOL RD, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,687 sqft Built 1980
Raw Value $982,299
Adjusted Value $823,635

Adjusted -$158,664 for 493 sqft less living space. Net adjustment: -$158,664.

3473 GATTIS SCHOOL RD, ROUND ROCK, TX 78664
0.00 mi 98% similar Same subdivision
3 bed 3 bath 2,188 sqft Built 1977
Raw Value $1,089,769
Adjusted Value $769,827

Adjusted -$319,904 for 994 sqft less living space and -$38 for being older. Net adjustment: -$319,942.

3509 GATTIS SCHOOL RD, ROUND ROCK, TX 78664
0.00 mi 92% similar Same subdivision
4 bed 3 bath 2,479 sqft Built 1979
Raw Value $2,024,427
Adjusted Value $1,610,856

Adjusted -$413,558 for 1,285 sqft less living space and -$13 for being older. Net adjustment: -$413,571.

3 bed 2 bath 1,328 sqft Built 2014
Raw Value $329,108
Adjusted Value $286,410

Adjusted -$43,126 for 134 sqft less living space and +$428 for being newer. Net adjustment: -$42,698.

3 bed 2 bath 1,059 sqft Built 2016
Raw Value $381,854
Adjusted Value $425,755

Adjusted +$43,448 for 135 sqft more living space and +$453 for being newer. Net adjustment: +$43,901.

The Neighborhood

This home is valued 48.8% 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

above average
213 Properties
$734,399 Median Value
+3.8% YoY Change
4% Have Pool
68% Have Garage
This Home
$1,092,876
Median
$734,399

This home is +48.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $19,664 across all districts. With a homestead exemption claimed, that drops to $18,212 — saving $1,452 per year. That's $1,518 per month a buyer should budget. The assessed value increased roughly in line with the neighborhood, so a tax protest is unlikely to yield significant savings.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$9,760
Round RockCity0.3720%$4,065
Williamson CountyCounty0.3694%$4,038
Austin Community Collegespecial0.1034%$1,130
Williamson County FM/RdCounty0.0443%$484
Upper Brushy Creek WCIDWater0.0170%$186
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$19,664

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $769,827 would pay approximately $4,805 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.

View full property details