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4018 FLOWSTONE LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,102 sqftBuilt 2016

Property at a Glance

This home is estimated between $469,731 and $647,647, with a best estimate of $614,708. 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

$469,731 $647,647
Best Estimate
$614,708
WCAD Value
$451,986
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 $469,731 and $647,647. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

4014 FLOWSTONE LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 3 bath 1,535 sqft Built 2016
Raw Value $513,889
Adjusted Value $639,578

Adjusted +$125,689 for 567 sqft more living space. Net adjustment: +$125,689.

4022 FLOWSTONE LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 4 bath 2,101 sqft Built 2016
Raw Value $493,493
Adjusted Value $493,715

Adjusted +$222 for 1 sqft more living space. Net adjustment: +$222.

4010 FLOWSTONE LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 3 bath 2,041 sqft Built 2022
Raw Value $612,143
Adjusted Value $614,708

Adjusted +$13,522 for 61 sqft more living space and -$10,957 for being older. Net adjustment: +$2,565.

4019 FLOWSTONE LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,829 sqft Built 2017
Raw Value $411,040
Adjusted Value $469,731

Adjusted +$60,517 for 273 sqft more living space and -$1,826 for being older. Net adjustment: +$58,691.

4023 FLOWSTONE LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 3 bath 1,508 sqft Built 2016
Raw Value $515,973
Adjusted Value $647,647

Adjusted +$131,674 for 594 sqft more living space. Net adjustment: +$131,674.

The Neighborhood

This home is valued 13.6% below the G799514C - MAYFIELD RANCH median of $523,371. That positions it competitively for buyers comparing within the neighborhood. 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
$451,986
Median
$523,371

This home is -13.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,339 across all districts. With a homestead exemption claimed, that drops to $7,785 — saving $1,554 per year. That's $649 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%$4,749
Highlands at Mayfield Ranch MUDMUD0.4850%$2,192
Williamson CountyCounty0.3694%$1,670
Williamson County ESD #9 - Round RockESD0.0999%$452
Williamson County FM/RdCounty0.0443%$200
Upper Brushy Creek WCIDWater0.0170%$77
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$9,339

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $614,708 would pay approximately $3,837 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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