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21 WILDFLOWER TRL, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath2,473 sqftBuilt 1975

Property at a Glance

This home is estimated between $573,964 and $972,378, with a best estimate of $903,627. That places the property above the R575583D - RR Rual Sub 122 & Gattis School Rd Area median of $734,399, in a neighborhood that appreciated 3.8% over the past year.

Estimated Value Range

$573,964 $972,378
Best Estimate
$903,627
WCAD Value
$729,945
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $573,964 and $972,378. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

1 WILDFLOWER TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,312 sqft Built 2000
Raw Value $521,835
Adjusted Value $573,964

Adjusted +$51,815 for 161 sqft more living space and +$314 for being newer. Net adjustment: +$52,129.

3 WILDFLOWER TRL, ROUND ROCK, TX 78664
0.00 mi 96% similar Same subdivision
4 bed 2 bath 1,482 sqft Built 1972
Raw Value $584,727
Adjusted Value $903,627

Adjusted +$318,938 for 991 sqft more living space and -$38 for being older. Net adjustment: +$318,900.

9 WILDFLOWER TRL, ROUND ROCK, TX 78664
0.00 mi 95% similar Same subdivision
3 bed 3 bath 1,521 sqft Built 1980
Raw Value $665,928
Adjusted Value $972,378

Adjusted +$306,387 for 952 sqft more living space and +$63 for being newer. Net adjustment: +$306,450.

15 WILDFLOWER TRL, ROUND ROCK, TX 78664
0.00 mi 94% similar Same subdivision
3 bed 2 bath 2,382 sqft Built 1922
Raw Value $909,100
Adjusted Value $937,720

Adjusted +$29,287 for 91 sqft more living space and -$667 for being older. Net adjustment: +$28,620.

3 bed 2 bath 1,397 sqft Built 1977
Raw Value $286,766
Adjusted Value $633,085

Adjusted +$346,294 for 1,076 sqft more living space and +$25 for being newer. Net adjustment: +$346,319.

The Neighborhood

This home is in line with the R575583D - RR Rual Sub 122 & Gattis School Rd Area median of $734,399. The neighborhood appreciated 3.8% over the past year.

R575583D - RR Rual Sub 122 & Gattis School Rd Area

typical
213 Properties
$734,399 Median Value
+3.8% YoY Change
4% Have Pool
68% Have Garage
This Home
$729,945
Median
$734,399

This home is -0.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $11,148 across all districts. With a homestead exemption claimed, that drops to $9,762 — saving $1,386 per year. That's $814 per month a buyer should budget. The assessed value increased +6.8% vs the subdivision average of +3.8%. This above-average increase gives a protest opportunity score of 30 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$6,519
Williamson CountyCounty0.3694%$2,697
Austin Community Collegespecial0.1034%$755
Williamson County ESD #9 - Round RockESD0.0999%$729
Williamson County FM/RdCounty0.0443%$324
Upper Brushy Creek WCIDWater0.0170%$124
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$11,148
30 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $903,627 would pay approximately $5,640 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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