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2003 ZEPHYR LN, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,561 sqftBuilt 1985

Property at a Glance

This home is estimated between $288,869 and $422,861, with a best estimate of $339,423. That places the property above the R604482H - KENSINGTON / WINDY TERRACE 1985 AND OLDER median of $312,111, in a neighborhood that declined 9.7% over the past year.

Estimated Value Range

$288,869 $422,861
Best Estimate
$339,423
WCAD Value
$374,537
High Confidence

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

Based on 5 comparable properties in R604482H - KENSINGTON / WINDY TERRACE 1985 AND OLDER, this home's estimated market value is between $288,869 and $422,861. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1906 ZEPHYR LN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,254 sqft Built 1991
Raw Value $315,078
Adjusted Value $380,007

Adjusted +$64,498 for 307 sqft more living space and +$431 for being newer. Net adjustment: +$64,929.

2020 ZEPHYR LN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,519 sqft Built 1985
Raw Value $324,683
Adjusted Value $333,507

Adjusted +$8,824 for 42 sqft more living space. Net adjustment: +$8,824.

2114 ZEPHYR LN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 936 sqft Built 1985
Raw Value $291,554
Adjusted Value $422,861

Adjusted +$131,307 for 625 sqft more living space. Net adjustment: +$131,307.

2013 ZEPHYR LN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,581 sqft Built 1985
Raw Value $293,071
Adjusted Value $288,869

Adjusted -$4,202 for 20 sqft less living space. Net adjustment: -$4,202.

2101 ZEPHYR LN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,208 sqft Built 1985
Raw Value $265,261
Adjusted Value $339,423

Adjusted +$74,162 for 353 sqft more living space. Net adjustment: +$74,162.

The Neighborhood

This home is valued 20.0% above the R604482H - KENSINGTON / WINDY TERRACE 1985 AND OLDER median of $312,111. With 459 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 9.7% over the past year.

R604482H - KENSINGTON / WINDY TERRACE 1985 AND OLDER

above average
459 Properties
$312,111 Median Value
-9.7% YoY Change
2% Have Pool
94% Have Garage
This Home
$374,537
Median
$312,111

This home is +20.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,739 across all districts. With a homestead exemption claimed, that drops to $5,419 — saving $1,320 per year. That's $452 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%$3,345
Round RockCity0.3720%$1,393
Williamson CountyCounty0.3694%$1,384
Austin Community Collegespecial0.1034%$387
Williamson County FM/RdCounty0.0443%$166
Upper Brushy Creek WCIDWater0.0170%$64
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,739

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $339,423 would pay approximately $2,119 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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