Beta Williamson County, TX only — data and coverage are limited during early access.

3836 STANYAN DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed4 bath3,343 sqftBuilt 2021

Property at a Glance

This home is estimated between $662,252 and $1,366,719, with a best estimate of $891,122. 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

$662,252 $1,366,719
Best Estimate
$891,122
WCAD Value
$631,510
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 $662,252 and $1,366,719. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

3601 BAINBRIDGE ST, ROUND ROCK, TX 78681
0.00 mi 94% similar Same subdivision
4 bed 3 bath 1,916 sqft Built 2016
Raw Value $578,786
Adjusted Value $904,244

Adjusted +$316,328 for 1,427 sqft more living space and +$9,130 for being newer. Net adjustment: +$325,458.

3736 BAINBRIDGE ST, ROUND ROCK, TX 78681
0.00 mi 94% similar Same subdivision
4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $891,122

Adjusted +$316,328 for 1,427 sqft more living space and +$12,783 for being newer. Net adjustment: +$329,111.

4149 PRESIDIO LN, ROUND ROCK, TX 78681
0.00 mi 91% similar Same subdivision
3 bed 2 bath 2,248 sqft Built 2018
Raw Value $479,901
Adjusted Value $728,111

Adjusted +$242,732 for 1,095 sqft more living space and +$5,478 for being newer. Net adjustment: +$248,210.

5 bed 5 bath 2,711 sqft Built 2016
Raw Value $1,217,491
Adjusted Value $1,366,719

Adjusted +$140,098 for 632 sqft more living space and +$9,130 for being newer. Net adjustment: +$149,228.

4 bed 2 bath 3,110 sqft Built 2000
Raw Value $572,254
Adjusted Value $662,252

Adjusted +$51,650 for 233 sqft more living space and +$38,348 for being newer. Net adjustment: +$89,998.

The Neighborhood

This home is valued 20.7% 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
$631,510
Median
$523,371

This home is +20.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,049 across all districts. With a homestead exemption claimed, that drops to $11,461 — saving $1,588 per year. That's $955 per month a buyer should budget. The assessed value increased -2.4% vs the subdivision average of -9.3%. This above-average increase gives a protest opportunity score of 35 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Georgetown ISDSchool1.0506%$6,635
Highlands at Mayfield Ranch MUDMUD0.4850%$3,063
Williamson CountyCounty0.3694%$2,333
Williamson County ESD #9 - Round RockESD0.0999%$631
Williamson County FM/RdCounty0.0443%$280
Upper Brushy Creek WCIDWater0.0170%$107
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$13,049
35 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $891,122 would pay approximately $5,562 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.

View full property details