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1525 TONIA LOOP, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,961 sqftBuilt 2006

Property at a Glance

This home is estimated between $354,125 and $457,300, with a best estimate of $373,174. 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

$354,125 $457,300
Best Estimate
$373,174
WCAD Value
$328,928
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 $354,125 and $457,300. 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 $457,300

Adjusted +$132,676 for 573 sqft more living space. Net adjustment: +$132,676.

3 bed 2 bath 2,045 sqft Built 2006
Raw Value $385,723
Adjusted Value $366,273

Adjusted -$19,450 for 84 sqft less living space. Net adjustment: -$19,450.

3 bed 2 bath 1,831 sqft Built 2006
Raw Value $363,811
Adjusted Value $393,912

Adjusted +$30,101 for 130 sqft more living space. Net adjustment: +$30,101.

1521 TONIA LOOP, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,868 sqft Built 2006
Raw Value $332,591
Adjusted Value $354,125

Adjusted +$21,534 for 93 sqft more living space. Net adjustment: +$21,534.

1517 TONIA LOOP, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,596 sqft Built 2006
Raw Value $288,660
Adjusted Value $373,174

Adjusted +$84,514 for 365 sqft more living space. Net adjustment: +$84,514.

The Neighborhood

This home is in line with the R409599G - STONEY BROOK - ALL SECTIONS median of $328,056. 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
$328,928
Median
$328,056

This home is +0.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $5,918 across all districts. With a homestead exemption claimed, that drops to $4,607 — saving $1,311 per year. That's $384 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%$2,938
Round RockCity0.3720%$1,224
Williamson CountyCounty0.3694%$1,215
Austin Community Collegespecial0.1034%$340
Williamson County FM/RdCounty0.0443%$146
Upper Brushy Creek WCIDWater0.0170%$56
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,918

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $373,174 would pay approximately $2,329 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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