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3820 WINNIE PL, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath3,214 sqftBuilt 2021

Property at a Glance

This home is estimated between $767,259 and $1,398,335, with a best estimate of $832,274. 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

$767,259 $1,398,335
Best Estimate
$832,274
WCAD Value
$640,809
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 $767,259 and $1,398,335 should be treated as a rough guide.

Comparable Properties (5)

3821 WINNIE PL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
5 bed 3 bath 2,217 sqft Built 2021
Raw Value $546,251
Adjusted Value $767,259

Adjusted +$221,008 for 997 sqft more living space. Net adjustment: +$221,008.

3824 WINNIE PL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 4 bath 2,930 sqft Built 2020
Raw Value $738,952
Adjusted Value $803,733

Adjusted +$62,955 for 284 sqft more living space and +$1,826 for being newer. Net adjustment: +$64,781.

4 bed 3 bath 2,729 sqft Built 2013
Raw Value $1,276,214
Adjusted Value $1,398,335

Adjusted +$107,512 for 485 sqft more living space and +$14,609 for being newer. Net adjustment: +$122,121.

4 bed 3 bath 2,711 sqft Built 2012
Raw Value $1,185,625
Adjusted Value $1,313,562

Adjusted +$111,502 for 503 sqft more living space and +$16,435 for being newer. Net adjustment: +$127,937.

4 bed 3 bath 2,882 sqft Built 2007
Raw Value $733,113
Adjusted Value $832,274

Adjusted +$73,596 for 332 sqft more living space and +$25,565 for being newer. Net adjustment: +$99,161.

The Neighborhood

This home is valued 22.4% 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
$640,809
Median
$523,371

This home is +22.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,241 across all districts. With a homestead exemption claimed, that drops to $11,652 — saving $1,589 per year. That's $971 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%$6,732
Highlands at Mayfield Ranch MUDMUD0.4850%$3,108
Williamson CountyCounty0.3694%$2,367
Williamson County ESD #9 - Round RockESD0.0999%$640
Williamson County FM/RdCounty0.0443%$284
Upper Brushy Creek WCIDWater0.0170%$109
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$13,241

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $832,274 would pay approximately $5,195 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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