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3851 STANYAN DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,882 sqftBuilt 2018

Property at a Glance

This home is estimated between $620,442 and $1,259,049, with a best estimate of $796,574. 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

$620,442 $1,259,049
Best Estimate
$796,574
WCAD Value
$655,879
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 $620,442 and $1,259,049. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

3736 BAINBRIDGE ST, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $783,451

Adjusted +$214,136 for 966 sqft more living space and +$7,304 for being newer. Net adjustment: +$221,440.

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 $796,574

Adjusted +$214,136 for 966 sqft more living space and +$3,652 for being newer. Net adjustment: +$217,788.

4149 PRESIDIO LN, ROUND ROCK, TX 78681
0.00 mi 99% similar Same subdivision
3 bed 2 bath 2,248 sqft Built 2018
Raw Value $479,901
Adjusted Value $620,442

Adjusted +$140,541 for 634 sqft more living space. Net adjustment: +$140,541.

5 bed 5 bath 2,711 sqft Built 2016
Raw Value $1,217,491
Adjusted Value $1,259,049

Adjusted +$37,906 for 171 sqft more living space and +$3,652 for being newer. Net adjustment: +$41,558.

4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $1,071,705

Adjusted +$146,969 for 663 sqft more living space and +$20,087 for being newer. Net adjustment: +$167,056.

The Neighborhood

This home is valued 25.3% 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
$655,879
Median
$523,371

This home is +25.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,552 across all districts. With a homestead exemption claimed, that drops to $11,960 — saving $1,592 per year. That's $997 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%$6,891
Highlands at Mayfield Ranch MUDMUD0.4850%$3,181
Williamson CountyCounty0.3694%$2,423
Williamson County ESD #9 - Round RockESD0.0999%$655
Williamson County FM/RdCounty0.0443%$291
Upper Brushy Creek WCIDWater0.0170%$111
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$13,552

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $796,574 would pay approximately $4,972 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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