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

1809 WHIRLWIND TRL, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,383 sqftBuilt 1993

Property at a Glance

This home is estimated between $202,832 and $424,640, with a best estimate of $311,464. That places the property below the R602494H - Greenlawn Place median of $314,129, in a neighborhood that declined 4.3% over the past year.

Estimated Value Range

$202,832 $424,640
Best Estimate
$311,464
WCAD Value
$294,087
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 $202,832 and $424,640. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

1808 SOUTHEASTERN TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,918 sqft Built 1993
Raw Value $336,766
Adjusted Value $202,832

Adjusted -$133,934 for 535 sqft less living space. Net adjustment: -$133,934.

1805 SOUTHWESTERN TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,163 sqft Built 1992
Raw Value $310,355
Adjusted Value $368,735

Adjusted +$55,076 for 220 sqft more living space and +$3,304 for being newer. Net adjustment: +$58,380.

1805 SOUTHEASTERN TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,122 sqft Built 1992
Raw Value $355,996
Adjusted Value $424,640

Adjusted +$65,340 for 261 sqft more living space and +$3,304 for being newer. Net adjustment: +$68,644.

3 bed 2 bath 1,448 sqft Built 1985
Raw Value $281,103
Adjusted Value $291,264

Adjusted -$16,272 for 65 sqft less living space and +$26,433 for being newer. Net adjustment: +$10,161.

3 bed 2 bath 1,362 sqft Built 1987
Raw Value $286,382
Adjusted Value $311,464

Adjusted +$5,257 for 21 sqft more living space and +$19,825 for being newer. Net adjustment: +$25,082.

The Neighborhood

This home is valued 6.4% below the R602494H - Greenlawn Place median of $314,129. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 4.3% over the past year.

R602494H - Greenlawn Place

typical
219 Properties
$314,129 Median Value
-4.3% YoY Change
1% Have Pool
99% Have Garage
This Home
$294,087
Median
$314,129

This home is -6.4% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,291 across all districts. With a homestead exemption claimed, that drops to $3,987 — saving $1,304 per year. That's $332 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%$2,626
Round RockCity0.3720%$1,094
Williamson CountyCounty0.3694%$1,086
Austin Community Collegespecial0.1034%$304
Williamson County FM/RdCounty0.0443%$130
Upper Brushy Creek WCIDWater0.0170%$50
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,291

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $311,464 would pay approximately $1,944 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.

View full property details