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3812 STANYAN DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

5 bed4 bath2,558 sqftBuilt 2016

Property at a Glance

This home is estimated between $544,968 and $1,183,575, with a best estimate of $721,100. 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

$544,968 $1,183,575
Best Estimate
$721,100
WCAD Value
$670,992
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $544,968 and $1,183,575. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

5 bed 5 bath 2,711 sqft Built 2016
Raw Value $1,217,491
Adjusted Value $1,183,575

Adjusted -$33,916 for 153 sqft less living space. Net adjustment: -$33,916.

3601 BAINBRIDGE ST, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,916 sqft Built 2016
Raw Value $578,786
Adjusted Value $721,100

Adjusted +$142,314 for 642 sqft more living space. Net adjustment: +$142,314.

3736 BAINBRIDGE ST, ROUND ROCK, TX 78681
0.00 mi 99% similar Same subdivision
4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $707,977

Adjusted +$142,314 for 642 sqft more living space and +$3,652 for being newer. Net adjustment: +$145,966.

4149 PRESIDIO LN, ROUND ROCK, TX 78681
0.00 mi 97% similar Same subdivision
3 bed 2 bath 2,248 sqft Built 2018
Raw Value $479,901
Adjusted Value $544,968

Adjusted +$68,719 for 310 sqft more living space and -$3,652 for being older. Net adjustment: +$65,067.

4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $996,231

Adjusted +$75,147 for 339 sqft more living space and +$16,435 for being newer. Net adjustment: +$91,582.

The Neighborhood

This home is valued 28.2% 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
$670,992
Median
$523,371

This home is +28.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,865 across all districts. With a homestead exemption claimed, that drops to $12,270 — saving $1,595 per year. That's $1,023 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%$7,049
Highlands at Mayfield Ranch MUDMUD0.4850%$3,254
Williamson CountyCounty0.3694%$2,479
Williamson County ESD #9 - Round RockESD0.0999%$670
Williamson County FM/RdCounty0.0443%$297
Upper Brushy Creek WCIDWater0.0170%$114
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$13,865

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $721,100 would pay approximately $4,501 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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