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3821 STANYAN DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath3,126 sqftBuilt 2021

Property at a Glance

This home is estimated between $614,149 and $1,318,615, with a best estimate of $843,019. 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

$614,149 $1,318,615
Best Estimate
$843,019
WCAD Value
$619,984
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 $614,149 and $1,318,615. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

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 $856,141

Adjusted +$268,225 for 1,210 sqft more living space and +$9,130 for being newer. Net adjustment: +$277,355.

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 $843,019

Adjusted +$268,225 for 1,210 sqft more living space and +$12,783 for being newer. Net adjustment: +$281,008.

4149 PRESIDIO LN, ROUND ROCK, TX 78681
0.00 mi 95% similar Same subdivision
3 bed 2 bath 2,248 sqft Built 2018
Raw Value $479,901
Adjusted Value $680,008

Adjusted +$194,629 for 878 sqft more living space and +$5,478 for being newer. Net adjustment: +$200,107.

4 bed 2 bath 3,110 sqft Built 2000
Raw Value $572,254
Adjusted Value $614,149

Adjusted +$3,547 for 16 sqft more living space and +$38,348 for being newer. Net adjustment: +$41,895.

5 bed 5 bath 2,711 sqft Built 2016
Raw Value $1,217,491
Adjusted Value $1,318,615

Adjusted +$91,994 for 415 sqft more living space and +$9,130 for being newer. Net adjustment: +$101,124.

The Neighborhood

This home is valued 18.5% 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
$619,984
Median
$523,371

This home is +18.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,811 across all districts. With a homestead exemption claimed, that drops to $11,225 — saving $1,586 per year. That's $935 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%$6,514
Highlands at Mayfield Ranch MUDMUD0.4850%$3,007
Williamson CountyCounty0.3694%$2,291
Williamson County ESD #9 - Round RockESD0.0999%$619
Williamson County FM/RdCounty0.0443%$275
Upper Brushy Creek WCIDWater0.0170%$105
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$12,811

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $843,019 would pay approximately $5,262 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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