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

1512 TONIA LOOP, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,083 sqftBuilt 2006

Property at a Glance

This home is estimated between $164,403 and $332,744, with a best estimate of $213,316. That places the property below the R409599G - STONEY BROOK - ALL SECTIONS median of $328,056, in a neighborhood that declined 4.7% over the past year.

Estimated Value Range

$164,403 $332,744
Best Estimate
$213,316
WCAD Value
$357,447
High Confidence

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

Based on 5 comparable properties in R409599G - STONEY BROOK - ALL SECTIONS, this home's estimated market value is between $164,403 and $332,744. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1516 TONIA LOOP, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,725 sqft Built 2007
Raw Value $308,945
Adjusted Value $164,403

Adjusted -$148,653 for 642 sqft less living space and +$4,111 for being newer. Net adjustment: -$144,542.

1508 TONIA LOOP, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
4 bed 2 bath 1,280 sqft Built 2006
Raw Value $378,359
Adjusted Value $332,744

Adjusted -$45,615 for 197 sqft less living space. Net adjustment: -$45,615.

3923 BONNIE LN, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,280 sqft Built 2003
Raw Value $274,567
Adjusted Value $216,618

Adjusted -$45,615 for 197 sqft less living space and -$12,334 for being older. Net adjustment: -$57,949.

3919 BONNIE LN, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,280 sqft Built 2003
Raw Value $271,265
Adjusted Value $213,316

Adjusted -$45,615 for 197 sqft less living space and -$12,334 for being older. Net adjustment: -$57,949.

3925 BONNIE LN, ROUND ROCK, TX 78665
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,577 sqft Built 2003
Raw Value $331,519
Adjusted Value $204,801

Adjusted -$114,384 for 494 sqft less living space and -$12,334 for being older. Net adjustment: -$126,718.

The Neighborhood

This home is valued 9.0% above the R409599G - STONEY BROOK - ALL SECTIONS median of $328,056. With 197 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 4.7% over the past year.

R409599G - STONEY BROOK - ALL SECTIONS

typical
197 Properties
$328,056 Median Value
-4.7% YoY Change
0% Have Pool
100% Have Garage
This Home
$357,447
Median
$328,056

This home is +9.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,431 across all districts. With a homestead exemption claimed, that drops to $5,115 — saving $1,316 per year. That's $426 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%$3,192
Round RockCity0.3720%$1,330
Williamson CountyCounty0.3694%$1,321
Austin Community Collegespecial0.1034%$370
Williamson County FM/RdCounty0.0443%$158
Upper Brushy Creek WCIDWater0.0170%$61
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,431

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $213,316 would pay approximately $1,332 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