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3901 STANYAN DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath2,992 sqftBuilt 2020

Property at a Glance

This home is estimated between $569,671 and $923,462, with a best estimate of $648,478. 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

$569,671 $923,462
Best Estimate
$648,478
WCAD Value
$643,552
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 $569,671 and $923,462 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 $648,478

Adjusted +$164,925 for 744 sqft more living space and +$3,652 for being newer. Net adjustment: +$168,577.

3 bed 2 bath 3,097 sqft Built 2000
Raw Value $556,425
Adjusted Value $569,671

Adjusted -$23,276 for 105 sqft less living space and +$36,522 for being newer. Net adjustment: +$13,246.

3 bed 2 bath 2,221 sqft Built 2014
Raw Value $741,595
Adjusted Value $923,462

Adjusted +$170,910 for 771 sqft more living space and +$10,957 for being newer. Net adjustment: +$181,867.

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 $824,610

Adjusted +$238,520 for 1,076 sqft more living space and +$7,304 for being newer. Net adjustment: +$245,824.

4 bed 2 bath 3,110 sqft Built 2000
Raw Value $572,254
Adjusted Value $582,619

Adjusted -$26,157 for 118 sqft less living space and +$36,522 for being newer. Net adjustment: +$10,365.

The Neighborhood

This home is valued 23.0% 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
$643,552
Median
$523,371

This home is +23.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,298 across all districts. With a homestead exemption claimed, that drops to $11,708 — saving $1,590 per year. That's $976 per month a buyer should budget. The assessed value increased -3.1% vs the subdivision average of -9.3%. This above-average increase gives a protest opportunity score of 31 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Georgetown ISDSchool1.0506%$6,761
Highlands at Mayfield Ranch MUDMUD0.4850%$3,121
Williamson CountyCounty0.3694%$2,378
Williamson County ESD #9 - Round RockESD0.0999%$643
Williamson County FM/RdCounty0.0443%$285
Upper Brushy Creek WCIDWater0.0170%$109
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$13,298
31 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $648,478 would pay approximately $4,048 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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