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4100 FLOWSTONE LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,672 sqftBuilt 2017

Property at a Glance

This home is estimated between $540,148 and $869,204, with a best estimate of $615,366. That places the property above the G799514C - MAYFIELD RANCH median of $523,371, in a neighborhood that declined 9.3% over the past year.

Estimated Value Range

$540,148 $869,204
Best Estimate
$615,366
WCAD Value
$558,088
High Confidence

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

Based on 5 comparable properties in G799514C - MAYFIELD RANCH, this home's estimated market value is between $540,148 and $869,204. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

4083 FLOWSTONE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,232 sqft Built 2017
Raw Value $480,551
Adjusted Value $578,087

Adjusted +$97,536 for 440 sqft more living space. Net adjustment: +$97,536.

4109 FLOWSTONE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,668 sqft Built 2016
Raw Value $537,435
Adjusted Value $540,148

Adjusted +$887 for 4 sqft more living space and +$1,826 for being newer. Net adjustment: +$2,713.

4104 FLOWSTONE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,546 sqft Built 2016
Raw Value $585,609
Adjusted Value $615,366

Adjusted +$27,931 for 126 sqft more living space and +$1,826 for being newer. Net adjustment: +$29,757.

4108 FLOWSTONE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,172 sqft Built 2016
Raw Value $756,541
Adjusted Value $869,204

Adjusted +$110,837 for 500 sqft more living space and +$1,826 for being newer. Net adjustment: +$112,663.

4101 FLOWSTONE LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,843 sqft Built 2017
Raw Value $578,183
Adjusted Value $761,950

Adjusted +$183,767 for 829 sqft more living space. Net adjustment: +$183,767.

The Neighborhood

This home is valued 6.6% above the G799514C - MAYFIELD RANCH median of $523,371. With 1,093 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 9.3% over the past year.

G799514C - MAYFIELD RANCH

typical
1,093 Properties
$523,371 Median Value
-9.3% YoY Change
1% Have Pool
100% Have Garage
This Home
$558,088
Median
$523,371

This home is +6.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,532 across all districts. With a homestead exemption claimed, that drops to $9,958 — saving $1,574 per year. That's $830 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
Georgetown ISDSchool1.0506%$5,863
Highlands at Mayfield Ranch MUDMUD0.4850%$2,707
Williamson CountyCounty0.3694%$2,062
Williamson County ESD #9 - Round RockESD0.0999%$558
Williamson County FM/RdCounty0.0443%$247
Upper Brushy Creek WCIDWater0.0170%$95
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$11,532

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $615,366 would pay approximately $3,841 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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