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3428 FLOWSTONE LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,140 sqftBuilt 2000

Property at a Glance

This home is estimated between $215,540 and $454,255, with a best estimate of $391,120. That places the property above the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194, in a neighborhood that declined 10.9% over the past year.

Estimated Value Range

$215,540 $454,255
Best Estimate
$391,120
WCAD Value
$367,823
High Confidence

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

Based on 5 comparable properties in R107503F - PRESERVE AT STONE OAK - PH 3 & 4, this home's estimated market value is between $215,540 and $454,255. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3640 FLOWSTONE LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
3 bed 2 bath 920 sqft Built 2002
Raw Value $375,535
Adjusted Value $423,123

Adjusted +$44,786 for 220 sqft more living space and +$2,802 for being newer. Net adjustment: +$47,588.

3430 FLOWSTONE LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
3 bed 2 bath 987 sqft Built 2000
Raw Value $359,973
Adjusted Value $391,120

Adjusted +$31,147 for 153 sqft more living space. Net adjustment: +$31,147.

3424 FLOWSTONE LN, ROUND ROCK, TX 78681
0.02 mi 100% similar Same subdivision
3 bed 2 bath 966 sqft Built 2000
Raw Value $418,833
Adjusted Value $454,255

Adjusted +$35,422 for 174 sqft more living space. Net adjustment: +$35,422.

3418 FLOWSTONE LN, ROUND ROCK, TX 78681
0.06 mi 100% similar Same subdivision
3 bed 2 bath 1,562 sqft Built 2000
Raw Value $301,448
Adjusted Value $215,540

Adjusted -$85,908 for 422 sqft less living space. Net adjustment: -$85,908.

3440 FLOWSTONE LN, ROUND ROCK, TX 78681
0.06 mi 100% similar Same subdivision
3 bed 2 bath 1,462 sqft Built 2001
Raw Value $292,343
Adjusted Value $228,193

Adjusted -$65,551 for 322 sqft less living space and +$1,401 for being newer. Net adjustment: -$64,150.

The Neighborhood

This home is in line with the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194. Note that values in this subdivision declined 10.9% over the past year.

R107503F - PRESERVE AT STONE OAK - PH 3 & 4

typical
1,045 Properties
$368,194 Median Value
-10.9% YoY Change
1% Have Pool
99% Have Garage
This Home
$367,823
Median
$368,194

This home is -0.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $6,618 across all districts. With a homestead exemption claimed, that drops to $5,300 — saving $1,318 per year. That's $442 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%$3,285
Round RockCity0.3720%$1,368
Williamson CountyCounty0.3694%$1,359
Austin Community Collegespecial0.1034%$380
Williamson County FM/RdCounty0.0443%$163
Upper Brushy Creek WCIDWater0.0170%$63
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,618

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $391,120 would pay approximately $2,441 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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