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3926 BONNIE LN, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath2,272 sqftBuilt 2003

Property at a Glance

This home is estimated between $325,413 and $501,043, with a best estimate of $429,257. 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

$325,413 $501,043
Best Estimate
$429,257
WCAD Value
$326,552
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 $325,413 and $501,043. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3924 BONNIE LN, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,822 sqft Built 2004
Raw Value $320,950
Adjusted Value $429,257

Adjusted +$104,196 for 450 sqft more living space and +$4,111 for being newer. Net adjustment: +$108,307.

3928 BONNIE LN, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
4 bed 3 bath 2,409 sqft Built 2003
Raw Value $532,765
Adjusted Value $501,043

Adjusted -$31,722 for 137 sqft less living space. Net adjustment: -$31,722.

1553 LORSON LOOP, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,802 sqft Built 2003
Raw Value $318,920
Adjusted Value $427,747

Adjusted +$108,827 for 470 sqft more living space. Net adjustment: +$108,827.

3930 BONNIE LN, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,804 sqft Built 2003
Raw Value $322,061
Adjusted Value $430,425

Adjusted +$108,364 for 468 sqft more living space. Net adjustment: +$108,364.

1555 LORSON LOOP, ROUND ROCK, TX 78665
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,278 sqft Built 2003
Raw Value $326,802
Adjusted Value $325,413

Adjusted -$1,389 for 6 sqft less living space. Net adjustment: -$1,389.

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
$326,552
Median
$328,056

This home is -0.5% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,876 across all districts. With a homestead exemption claimed, that drops to $4,565 — saving $1,311 per year. That's $380 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%$2,916
Round RockCity0.3720%$1,215
Williamson CountyCounty0.3694%$1,206
Austin Community Collegespecial0.1034%$338
Williamson County FM/RdCounty0.0443%$145
Upper Brushy Creek WCIDWater0.0170%$56
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,876

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $429,257 would pay approximately $2,679 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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