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1800 WHIRLWIND TRL, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed2 bath917 sqftBuilt 1994

Property at a Glance

This home is estimated between $255,378 and $373,380, with a best estimate of $311,283. 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

$255,378 $373,380
Best Estimate
$311,283
WCAD Value
$363,263
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 $255,378 and $373,380. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

1804 SOUTHWESTERN TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 715 sqft Built 1995
Raw Value $326,114
Adjusted Value $373,380

Adjusted +$50,570 for 202 sqft more living space and -$3,304 for being older. Net adjustment: +$47,266.

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 $255,378

Adjusted -$61,585 for 246 sqft less living space and +$6,608 for being newer. Net adjustment: -$54,977.

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 $311,283

Adjusted -$51,321 for 205 sqft less living space and +$6,608 for being newer. Net adjustment: -$44,713.

3 bed 2 bath 846 sqft Built 1985
Raw Value $310,148
Adjusted Value $357,659

Adjusted +$17,774 for 71 sqft more living space and +$29,737 for being newer. Net adjustment: +$47,511.

3 bed 2 bath 1,014 sqft Built 1986
Raw Value $263,424
Adjusted Value $265,574

Adjusted -$24,283 for 97 sqft less living space and +$26,433 for being newer. Net adjustment: +$2,150.

The Neighborhood

This home is valued 15.6% above the R602494H - Greenlawn Place median of $314,129. With 219 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 4.3% over the past year.

R602494H - Greenlawn Place

above average
219 Properties
$314,129 Median Value
-4.3% YoY Change
1% Have Pool
99% Have Garage
This Home
$363,263
Median
$314,129

This home is +15.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,536 across all districts. With a homestead exemption claimed, that drops to $5,219 — saving $1,317 per year. That's $435 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%$3,244
Round RockCity0.3720%$1,351
Williamson CountyCounty0.3694%$1,342
Austin Community Collegespecial0.1034%$376
Williamson County FM/RdCounty0.0443%$161
Upper Brushy Creek WCIDWater0.0170%$62
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,536

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $311,283 would pay approximately $1,943 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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