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3910 BONNIE LN, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,977 sqftBuilt 2002

Property at a Glance

This home is estimated between $310,229 and $502,393, with a best estimate of $360,928. 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

$310,229 $502,393
Best Estimate
$360,928
WCAD Value
$317,636
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 $310,229 and $502,393. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3908 BONNIE LN, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
4 bed 3 bath 1,911 sqft Built 2004
Raw Value $478,888
Adjusted Value $502,393

Adjusted +$15,282 for 66 sqft more living space and +$8,223 for being newer. Net adjustment: +$23,505.

3912 BONNIE LN, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,280 sqft Built 2003
Raw Value $274,213
Adjusted Value $439,712

Adjusted +$161,388 for 697 sqft more living space and +$4,111 for being newer. Net adjustment: +$165,499.

1535 LORSON LOOP, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,816 sqft Built 2003
Raw Value $319,538
Adjusted Value $360,928

Adjusted +$37,279 for 161 sqft more living space and +$4,111 for being newer. Net adjustment: +$41,390.

1537 LORSON LOOP, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,977 sqft Built 2002
Raw Value $310,229
Adjusted Value $310,229

This comparable closely matches the subject property's features.

3914 BONNIE LN, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,977 sqft Built 2002
Raw Value $311,933
Adjusted Value $311,933

This comparable closely matches the subject property's features.

The Neighborhood

This home is valued 3.2% 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
$317,636
Median
$328,056

This home is -3.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,715 across all districts. With a homestead exemption claimed, that drops to $4,406 — saving $1,309 per year. That's $367 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%$2,837
Round RockCity0.3720%$1,182
Williamson CountyCounty0.3694%$1,173
Austin Community Collegespecial0.1034%$328
Williamson County FM/RdCounty0.0443%$141
Upper Brushy Creek WCIDWater0.0170%$54
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,715

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $360,928 would pay approximately $2,253 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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