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3840 STANYAN DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath1,897 sqftBuilt 2021

Property at a Glance

This home is estimated between $407,572 and $858,835, with a best estimate of $583,704. 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

$407,572 $858,835
Best Estimate
$583,704
WCAD Value
$626,289
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 $407,572 and $858,835. 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 $570,582

Adjusted -$4,212 for 19 sqft less living space and +$12,783 for being newer. Net adjustment: +$8,571.

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 $583,704

Adjusted -$4,212 for 19 sqft less living space and +$9,130 for being newer. Net adjustment: +$4,918.

4 bed 3 bath 1,811 sqft Built 2014
Raw Value $702,015
Adjusted Value $733,862

Adjusted +$19,064 for 86 sqft more living space and +$12,783 for being newer. Net adjustment: +$31,847.

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 $407,572

Adjusted -$77,807 for 351 sqft less living space and +$5,478 for being newer. Net adjustment: -$72,329.

4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $858,835

Adjusted -$71,379 for 322 sqft less living space and +$25,565 for being newer. Net adjustment: -$45,814.

The Neighborhood

This home is valued 19.7% 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
$626,289
Median
$523,371

This home is +19.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,941 across all districts. With a homestead exemption claimed, that drops to $11,354 — saving $1,587 per year. That's $946 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%$6,580
Highlands at Mayfield Ranch MUDMUD0.4850%$3,038
Williamson CountyCounty0.3694%$2,314
Williamson County ESD #9 - Round RockESD0.0999%$626
Williamson County FM/RdCounty0.0443%$278
Upper Brushy Creek WCIDWater0.0170%$106
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$12,941

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $583,704 would pay approximately $3,643 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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