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1533 TONIA LOOP, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,966 sqftBuilt 2006

Property at a Glance

This home is estimated between $330,086 and $458,458, with a best estimate of $367,431. That places the property above the R409599G - STONEY BROOK - ALL SECTIONS median of $328,056, in a neighborhood that declined 4.7% over the past year.

Estimated Value Range

$330,086 $458,458
Best Estimate
$367,431
WCAD Value
$304,801
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 $330,086 and $458,458. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

1529 TONIA LOOP, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,388 sqft Built 2006
Raw Value $324,624
Adjusted Value $458,458

Adjusted +$133,834 for 578 sqft more living space. Net adjustment: +$133,834.

3 bed 2 bath 2,045 sqft Built 2006
Raw Value $385,723
Adjusted Value $367,431

Adjusted -$18,292 for 79 sqft less living space. Net adjustment: -$18,292.

1525 TONIA LOOP, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,961 sqft Built 2006
Raw Value $328,928
Adjusted Value $330,086

Adjusted +$1,158 for 5 sqft more living space. Net adjustment: +$1,158.

1556 TONIA LOOP, ROUND ROCK, TX 78665
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,909 sqft Built 2006
Raw Value $321,637
Adjusted Value $334,835

Adjusted +$13,198 for 57 sqft more living space. Net adjustment: +$13,198.

3 bed 2 bath 1,831 sqft Built 2006
Raw Value $363,811
Adjusted Value $395,070

Adjusted +$31,259 for 135 sqft more living space. Net adjustment: +$31,259.

The Neighborhood

This home is valued 7.1% below the R409599G - STONEY BROOK - ALL SECTIONS median of $328,056. That positions it competitively for buyers comparing within the neighborhood. 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
$304,801
Median
$328,056

This home is -7.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,484 across all districts. With a homestead exemption claimed, that drops to $4,178 — saving $1,306 per year. That's $348 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%$2,722
Round RockCity0.3720%$1,134
Williamson CountyCounty0.3694%$1,126
Austin Community Collegespecial0.1034%$315
Williamson County FM/RdCounty0.0443%$135
Upper Brushy Creek WCIDWater0.0170%$52
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,484

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $367,431 would pay approximately $2,293 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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