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3917 BONNIE LN, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,804 sqftBuilt 2003

Property at a Glance

This home is estimated between $325,112 and $392,595, with a best estimate of $379,960. 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

$325,112 $392,595
Best Estimate
$379,960
WCAD Value
$324,184
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in R409599G - STONEY BROOK - ALL SECTIONS. The estimated range of $325,112 and $392,595 should be treated as a rough guide.

Comparable Properties (5)

3919 BONNIE LN, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,280 sqft Built 2003
Raw Value $271,265
Adjusted Value $392,595

Adjusted +$121,330 for 524 sqft more living space. Net adjustment: +$121,330.

3915 BONNIE LN, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,804 sqft Built 2003
Raw Value $325,112
Adjusted Value $325,112

This comparable closely matches the subject property's features.

3 bed 2 bath 1,710 sqft Built 2005
Raw Value $350,838
Adjusted Value $380,826

Adjusted +$21,765 for 94 sqft more living space and +$8,223 for being newer. Net adjustment: +$29,988.

3 bed 2 bath 1,710 sqft Built 2005
Raw Value $349,972
Adjusted Value $379,960

Adjusted +$21,765 for 94 sqft more living space and +$8,223 for being newer. Net adjustment: +$29,988.

3 bed 2 bath 1,692 sqft Built 2005
Raw Value $341,580
Adjusted Value $375,736

Adjusted +$25,933 for 112 sqft more living space and +$8,223 for being newer. Net adjustment: +$34,156.

The Neighborhood

This home is valued 1.2% 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
$324,184
Median
$328,056

This home is -1.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,833 across all districts. With a homestead exemption claimed, that drops to $4,523 — saving $1,310 per year. That's $377 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%$2,895
Round RockCity0.3720%$1,206
Williamson CountyCounty0.3694%$1,198
Austin Community Collegespecial0.1034%$335
Williamson County FM/RdCounty0.0443%$144
Upper Brushy Creek WCIDWater0.0170%$55
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,833

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $379,960 would pay approximately $2,372 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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