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1811 SOUTHWESTERN TRL, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath816 sqftBuilt 1995

Property at a Glance

This home is estimated between $195,826 and $328,748, with a best estimate of $245,980. 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

$195,826 $328,748
Best Estimate
$245,980
WCAD Value
$325,544
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 $195,826 and $328,748. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

1821 WHIRLWIND TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,092 sqft Built 1992
Raw Value $305,163
Adjusted Value $245,980

Adjusted -$69,095 for 276 sqft less living space and +$9,912 for being newer. Net adjustment: -$59,183.

1801 SOUTHEASTERN TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,204 sqft Built 1992
Raw Value $283,048
Adjusted Value $195,826

Adjusted -$97,134 for 388 sqft less living space and +$9,912 for being newer. Net adjustment: -$87,222.

3 bed 2 bath 795 sqft Built 1985
Raw Value $276,825
Adjusted Value $315,123

Adjusted +$5,257 for 21 sqft more living space and +$33,041 for being newer. Net adjustment: +$38,298.

1801 WHIRLWIND TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 775 sqft Built 1993
Raw Value $311,876
Adjusted Value $328,748

Adjusted +$10,264 for 41 sqft more living space and +$6,608 for being newer. Net adjustment: +$16,872.

1801 SOUTHWESTERN TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,163 sqft Built 1992
Raw Value $277,985
Adjusted Value $201,027

Adjusted -$86,870 for 347 sqft less living space and +$9,912 for being newer. Net adjustment: -$76,958.

The Neighborhood

This home is valued 3.6% 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

typical
219 Properties
$314,129 Median Value
-4.3% YoY Change
1% Have Pool
99% Have Garage
This Home
$325,544
Median
$314,129

This home is +3.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $5,857 across all districts. With a homestead exemption claimed, that drops to $4,547 — saving $1,310 per year. That's $379 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%$2,907
Round RockCity0.3720%$1,211
Williamson CountyCounty0.3694%$1,203
Austin Community Collegespecial0.1034%$337
Williamson County FM/RdCounty0.0443%$144
Upper Brushy Creek WCIDWater0.0170%$55
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,857

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $245,980 would pay approximately $1,535 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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