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1540 TONIA LOOP, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath1,520 sqftBuilt 2006

Property at a Glance

This home is estimated between $227,154 and $357,599, with a best estimate of $262,729. 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

$227,154 $357,599
Best Estimate
$262,729
WCAD Value
$371,904
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 $227,154 and $357,599. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1544 TONIA LOOP, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
3 bed 2 bath 2,176 sqft Built 2006
Raw Value $379,048
Adjusted Value $227,154

Adjusted -$151,894 for 656 sqft less living space. Net adjustment: -$151,894.

1536 TONIA LOOP, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,340 sqft Built 2005
Raw Value $320,032
Adjusted Value $357,599

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

3905 BONNIE LN, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,822 sqft Built 2004
Raw Value $323,271
Adjusted Value $245,121

Adjusted -$69,927 for 302 sqft less living space and -$8,223 for being older. Net adjustment: -$78,150.

3911 BONNIE LN, ROUND ROCK, TX 78665
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,643 sqft Built 2004
Raw Value $392,968
Adjusted Value $356,265

Adjusted -$28,480 for 123 sqft less living space and -$8,223 for being older. Net adjustment: -$36,703.

1548 TONIA LOOP, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,746 sqft Built 2006
Raw Value $315,058
Adjusted Value $262,729

Adjusted -$52,329 for 226 sqft less living space. Net adjustment: -$52,329.

The Neighborhood

This home is valued 13.4% 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
$371,904
Median
$328,056

This home is +13.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,692 across all districts. With a homestead exemption claimed, that drops to $5,373 — saving $1,319 per year. That's $448 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%$3,321
Round RockCity0.3720%$1,383
Williamson CountyCounty0.3694%$1,374
Austin Community Collegespecial0.1034%$385
Williamson County FM/RdCounty0.0443%$165
Upper Brushy Creek WCIDWater0.0170%$63
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,692

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $262,729 would pay approximately $1,640 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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