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4075 FLOWSTONE LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,237 sqftBuilt 2017

Property at a Glance

This home is estimated between $440,227 and $732,735, with a best estimate of $638,018. 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

$440,227 $732,735
Best Estimate
$638,018
WCAD Value
$632,809
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 $440,227 and $732,735. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

4071 FLOWSTONE LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
3 bed 2 bath 2,556 sqft Built 2017
Raw Value $510,941
Adjusted Value $440,227

Adjusted -$70,714 for 319 sqft less living space. Net adjustment: -$70,714.

4079 FLOWSTONE LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
5 bed 4 bath 2,167 sqft Built 2017
Raw Value $666,770
Adjusted Value $682,287

Adjusted +$15,517 for 70 sqft more living space. Net adjustment: +$15,517.

4067 FLOWSTONE LN, ROUND ROCK, TX 78681
0.02 mi 100% similar Same subdivision
4 bed 3 bath 1,508 sqft Built 2017
Raw Value $571,135
Adjusted Value $732,735

Adjusted +$161,600 for 729 sqft more living space. Net adjustment: +$161,600.

4059 FLOWSTONE LN, ROUND ROCK, TX 78681
0.05 mi 100% similar Same subdivision
3 bed 2 bath 2,102 sqft Built 2017
Raw Value $448,897
Adjusted Value $478,823

Adjusted +$29,926 for 135 sqft more living space. Net adjustment: +$29,926.

4055 FLOWSTONE LN, ROUND ROCK, TX 78681
0.06 mi 100% similar Same subdivision
4 bed 3 bath 1,918 sqft Built 2017
Raw Value $567,304
Adjusted Value $638,018

Adjusted +$70,714 for 319 sqft more living space. Net adjustment: +$70,714.

The Neighborhood

This home is valued 20.9% 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

above average
1,093 Properties
$523,371 Median Value
-9.3% YoY Change
1% Have Pool
100% Have Garage
This Home
$632,809
Median
$523,371

This home is +20.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,076 across all districts. With a homestead exemption claimed, that drops to $11,488 — saving $1,588 per year. That's $957 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%$6,648
Highlands at Mayfield Ranch MUDMUD0.4850%$3,069
Williamson CountyCounty0.3694%$2,338
Williamson County ESD #9 - Round RockESD0.0999%$632
Williamson County FM/RdCounty0.0443%$281
Upper Brushy Creek WCIDWater0.0170%$108
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$13,076

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $638,018 would pay approximately $3,982 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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