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1709 SOUTHWESTERN TRL, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

5 bed3 bath680 sqftBuilt 2025

Property at a Glance

This home is estimated between $273,768 and $423,018, with a best estimate of $361,852. That places the property above the R602494H - Greenlawn Place median of $314,129, in a neighborhood that declined 4.3% over the past year.

Estimated Value Range

$273,768 $423,018
Best Estimate
$361,852
WCAD Value
$362,982
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 $273,768 and $423,018. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

1504 ZEPHYR LN, ROUND ROCK, TX 78664
0.14 mi 89% similar Same subdivision
3 bed 2 bath 745 sqft Built 1995
Raw Value $320,083
Adjusted Value $402,934

Adjusted -$16,272 for 65 sqft less living space and +$99,123 for being newer. Net adjustment: +$82,851.

1709 WHIRLWIND TRL, ROUND ROCK, TX 78664
0.11 mi 87% similar Same subdivision
3 bed 2 bath 795 sqft Built 1994
Raw Value $349,381
Adjusted Value $423,018

Adjusted -$28,790 for 115 sqft less living space and +$102,427 for being newer. Net adjustment: +$73,637.

1412 ZEPHYR LN, ROUND ROCK, TX 78664
0.14 mi 79% similar Same subdivision
4 bed 2 bath 1,215 sqft Built 1993
Raw Value $390,055
Adjusted Value $361,852

Adjusted -$133,934 for 535 sqft less living space and +$105,731 for being newer. Net adjustment: -$28,203.

1508 ZEPHYR LN, ROUND ROCK, TX 78664
0.14 mi 77% similar Same subdivision
3 bed 2 bath 1,239 sqft Built 1996
Raw Value $317,892
Adjusted Value $273,768

Adjusted -$139,943 for 559 sqft less living space and +$95,819 for being newer. Net adjustment: -$44,124.

6 bed 6 bath 2,124 sqft Built 2017
Raw Value $641,048
Adjusted Value $305,984

Adjusted -$361,497 for 1,444 sqft less living space and +$26,433 for being newer. Net adjustment: -$335,064.

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
$362,982
Median
$314,129

This home is +15.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,531 across all districts. With a homestead exemption claimed, that drops to $5,214 — saving $1,317 per year. That's $435 per month a buyer should budget. The assessed value increased +359.5% vs the subdivision average of -4.3%. This above-average increase gives a protest opportunity score of 100 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$3,242
Round RockCity0.3720%$1,350
Williamson CountyCounty0.3694%$1,341
Austin Community Collegespecial0.1034%$375
Williamson County FM/RdCounty0.0443%$161
Upper Brushy Creek WCIDWater0.0170%$62
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,531
100 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $361,852 would pay approximately $2,259 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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