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1821 THOMPSON TRL, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,430 sqftBuilt 2005

Property at a Glance

This home is estimated between $256,697 and $450,459, with a best estimate of $318,350. That places the property below the R525503F - TURTLE CREEK VILLAGE median of $329,108, in a neighborhood that declined 7.5% over the past year.

Estimated Value Range

$256,697 $450,459
Best Estimate
$318,350
WCAD Value
$311,339
High Confidence

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

Based on 5 comparable properties in R525503F - TURTLE CREEK VILLAGE, this home's estimated market value is between $256,697 and $450,459. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1781 THOMPSON TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,417 sqft Built 2006
Raw Value $311,852
Adjusted Value $314,609

Adjusted +$3,830 for 13 sqft more living space and -$1,073 for being older. Net adjustment: +$2,757.

1777 THOMPSON TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,655 sqft Built 2006
Raw Value $324,064
Adjusted Value $256,697

Adjusted -$66,294 for 225 sqft less living space and -$1,073 for being older. Net adjustment: -$67,367.

1753 THOMPSON TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,104 sqft Built 2006
Raw Value $355,479
Adjusted Value $450,459

Adjusted +$96,053 for 326 sqft more living space and -$1,073 for being older. Net adjustment: +$94,980.

1717 THOMPSON TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,166 sqft Built 2006
Raw Value $361,295
Adjusted Value $438,007

Adjusted +$77,785 for 264 sqft more living space and -$1,073 for being older. Net adjustment: +$76,712.

1859 THOMPSON TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,395 sqft Built 2004
Raw Value $306,965
Adjusted Value $318,350

Adjusted +$10,312 for 35 sqft more living space and +$1,073 for being newer. Net adjustment: +$11,385.

The Neighborhood

This home is valued 5.4% below the R525503F - TURTLE CREEK VILLAGE median of $329,108. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 7.5% over the past year.

R525503F - TURTLE CREEK VILLAGE

typical
425 Properties
$329,108 Median Value
-7.5% YoY Change
13% Have Pool
49% Have Garage
This Home
$311,339
Median
$329,108

This home is -5.4% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,602 across all districts. With a homestead exemption claimed, that drops to $4,294 — saving $1,308 per year. That's $358 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
Round Rock ISDSchool0.8931%$2,781
Round RockCity0.3720%$1,158
Williamson CountyCounty0.3694%$1,150
Austin Community Collegespecial0.1034%$322
Williamson County FM/RdCounty0.0443%$138
Upper Brushy Creek WCIDWater0.0170%$53
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,602

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $318,350 would pay approximately $1,987 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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