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1536 TONIA LOOP, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,340 sqftBuilt 2005

Property at a Glance

This home is estimated between $189,586 and $412,928, with a best estimate of $318,699. 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

$189,586 $412,928
Best Estimate
$318,699
WCAD Value
$320,032
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 $189,586 and $412,928. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1540 TONIA LOOP, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
4 bed 2 bath 1,520 sqft Built 2006
Raw Value $371,904
Adjusted Value $334,337

Adjusted -$41,678 for 180 sqft less living space and +$4,111 for being newer. Net adjustment: -$37,567.

3911 BONNIE LN, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
4 bed 2 bath 1,643 sqft Built 2004
Raw Value $392,968
Adjusted Value $318,699

Adjusted -$70,158 for 303 sqft less living space and -$4,111 for being older. Net adjustment: -$74,269.

1528 TONIA LOOP, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,746 sqft Built 2006
Raw Value $306,010
Adjusted Value $216,113

Adjusted -$94,008 for 406 sqft less living space and +$4,111 for being newer. Net adjustment: -$89,897.

1544 TONIA LOOP, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 2,176 sqft Built 2006
Raw Value $379,048
Adjusted Value $189,586

Adjusted -$193,573 for 836 sqft less living space and +$4,111 for being newer. Net adjustment: -$189,462.

3907 BONNIE LN, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 924 sqft Built 2003
Raw Value $324,828
Adjusted Value $412,928

Adjusted +$96,323 for 416 sqft more living space and -$8,223 for being older. Net adjustment: +$88,100.

The Neighborhood

This home is valued 2.4% 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
$320,032
Median
$328,056

This home is -2.4% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,758 across all districts. With a homestead exemption claimed, that drops to $4,449 — saving $1,309 per year. That's $371 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%$2,858
Round RockCity0.3720%$1,191
Williamson CountyCounty0.3694%$1,182
Austin Community Collegespecial0.1034%$331
Williamson County FM/RdCounty0.0443%$142
Upper Brushy Creek WCIDWater0.0170%$54
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,758

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $318,699 would pay approximately $1,989 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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