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3813 STANYAN DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath3,179 sqftBuilt 2018

Property at a Glance

This home is estimated between $607,472 and $961,262, with a best estimate of $686,279. 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

$607,472 $961,262
Best Estimate
$686,279
WCAD Value
$682,410
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in G799514C - MAYFIELD RANCH. The estimated range of $607,472 and $961,262 should be treated as a rough guide.

Comparable Properties (5)

4149 PRESIDIO LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,248 sqft Built 2018
Raw Value $479,901
Adjusted Value $686,279

Adjusted +$206,378 for 931 sqft more living space. Net adjustment: +$206,378.

3 bed 2 bath 3,097 sqft Built 2000
Raw Value $556,425
Adjusted Value $607,472

Adjusted +$18,177 for 82 sqft more living space and +$32,870 for being newer. Net adjustment: +$51,047.

4 bed 2 bath 3,110 sqft Built 2000
Raw Value $572,254
Adjusted Value $620,419

Adjusted +$15,295 for 69 sqft more living space and +$32,870 for being newer. Net adjustment: +$48,165.

3 bed 2 bath 2,221 sqft Built 2014
Raw Value $741,595
Adjusted Value $961,262

Adjusted +$212,363 for 958 sqft more living space and +$7,304 for being newer. Net adjustment: +$219,667.

3601 BAINBRIDGE ST, ROUND ROCK, TX 78681
0.00 mi 92% similar Same subdivision
4 bed 3 bath 1,916 sqft Built 2016
Raw Value $578,786
Adjusted Value $862,411

Adjusted +$279,973 for 1,263 sqft more living space and +$3,652 for being newer. Net adjustment: +$283,625.

The Neighborhood

This home is valued 30.4% 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
$682,410
Median
$523,371

This home is +30.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $14,101 across all districts. With a homestead exemption claimed, that drops to $12,504 — saving $1,597 per year. That's $1,042 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%$7,169
Highlands at Mayfield Ranch MUDMUD0.4850%$3,310
Williamson CountyCounty0.3694%$2,521
Williamson County ESD #9 - Round RockESD0.0999%$682
Williamson County FM/RdCounty0.0443%$303
Upper Brushy Creek WCIDWater0.0170%$116
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$14,101

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $686,279 would pay approximately $4,284 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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