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1815 SOUTHWESTERN TRL, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath880 sqftBuilt 1993

Property at a Glance

This home is estimated between $124,382 and $326,729, with a best estimate of $186,417. 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

$124,382 $326,729
Best Estimate
$186,417
WCAD Value
$316,641
High Confidence

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

Based on 5 comparable properties in R602494H - Greenlawn Place, this home's estimated market value is between $124,382 and $326,729. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1606 SOUTHWESTERN TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 831 sqft Built 1995
Raw Value $299,441
Adjusted Value $305,100

Adjusted +$12,267 for 49 sqft more living space and -$6,608 for being older. Net adjustment: +$5,659.

1705 WHIRLWIND TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 776 sqft Built 1994
Raw Value $303,997
Adjusted Value $326,729

Adjusted +$26,036 for 104 sqft more living space and -$3,304 for being older. Net adjustment: +$22,732.

1603 SOUTHWESTERN TRL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,265 sqft Built 1995
Raw Value $289,408
Adjusted Value $186,417

Adjusted -$96,383 for 385 sqft less living space and -$6,608 for being older. Net adjustment: -$102,991.

1902 SOUTHEASTERN TRL, ROUND ROCK, TX 78664
0.00 mi 98% similar Same subdivision
3 bed 2 bath 1,539 sqft Built 1998
Raw Value $305,880
Adjusted Value $124,382

Adjusted -$164,977 for 659 sqft less living space and -$16,521 for being older. Net adjustment: -$181,498.

2208 SOUTHEASTERN TRL, ROUND ROCK, TX 78664
0.00 mi 96% similar Same subdivision
3 bed 2 bath 1,892 sqft Built 1995
Raw Value $325,206
Adjusted Value $125,442

Adjusted -$253,349 for 1,012 sqft less living space and -$6,608 for being older and +$60,193 for having a garage. Net adjustment: -$199,764.

The Neighborhood

This home is in line with the R602494H - Greenlawn Place median of $314,129. 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
$316,641
Median
$314,129

This home is +0.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $5,697 across all districts. With a homestead exemption claimed, that drops to $4,388 — saving $1,309 per year. That's $366 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%$2,828
Round RockCity0.3720%$1,178
Williamson CountyCounty0.3694%$1,170
Austin Community Collegespecial0.1034%$327
Williamson County FM/RdCounty0.0443%$140
Upper Brushy Creek WCIDWater0.0170%$54
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,697

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $186,417 would pay approximately $1,164 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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