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

856 WINNSBORO DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,722 sqftBuilt 2018

Property at a Glance

This home is estimated between $267,332 and $496,726, with a best estimate of $413,141. That places the property below the R631414D - WARNER RANCH median of $436,007, in a neighborhood that declined 3.2% over the past year.

Estimated Value Range

$267,332 $496,726
Best Estimate
$413,141
WCAD Value
$418,024
High Confidence

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

Based on 5 comparable properties in R631414D - WARNER RANCH, this home's estimated market value is between $267,332 and $496,726. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

607 WINNSBORO CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,887 sqft Built 2016
Raw Value $556,606
Adjusted Value $496,726

Adjusted -$39,655 for 165 sqft less living space and -$20,225 for being older. Net adjustment: -$59,880.

852 WINNSBORO DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,681 sqft Built 2017
Raw Value $413,399
Adjusted Value $413,141

Adjusted +$9,854 for 41 sqft more living space and -$10,112 for being older. Net adjustment: -$258.

604 WINNSBORO CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,032 sqft Built 2018
Raw Value $431,821
Adjusted Value $357,317

Adjusted -$74,504 for 310 sqft less living space. Net adjustment: -$74,504.

713 WINNSBORO DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,303 sqft Built 2014
Raw Value $353,496
Adjusted Value $413,747

Adjusted +$100,700 for 419 sqft more living space and -$40,449 for being older. Net adjustment: +$60,251.

616 WINNSBORO CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,340 sqft Built 2016
Raw Value $436,084
Adjusted Value $267,332

Adjusted -$148,527 for 618 sqft less living space and -$20,225 for being older. Net adjustment: -$168,752.

The Neighborhood

This home is valued 4.1% below the R631414D - WARNER RANCH median of $436,007. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 3.2% over the past year.

R631414D - WARNER RANCH

typical
275 Properties
$436,007 Median Value
-3.2% YoY Change
0% Have Pool
97% Have Garage
This Home
$418,024
Median
$436,007

This home is -4.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,521 across all districts. With a homestead exemption claimed, that drops to $6,194 — saving $1,327 per year. That's $516 per month a buyer should budget. The assessed value increased +4.3% vs the subdivision average of -3.2%. This above-average increase gives a protest opportunity score of 38 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$3,733
Round RockCity0.3720%$1,555
Williamson CountyCounty0.3694%$1,544
Austin Community Collegespecial0.1034%$432
Williamson County FM/RdCounty0.0443%$185
Upper Brushy Creek WCIDWater0.0170%$71
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,521
38 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $413,141 would pay approximately $2,579 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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