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1408 ZEPHYR LN, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

5 bed4 bath1,607 sqftBuilt 2015

Property at a Glance

This home is estimated between $319,902 and $538,588, with a best estimate of $328,978. That places the property below the R450X - Round Rock East - Duplex median of $355,449, in a neighborhood that declined 8.7% over the past year.

Estimated Value Range

$319,902 $538,588
Best Estimate
$328,978
WCAD Value
$583,856
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 $319,902 and $538,588. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

1404 ZEPHYR LN, ROUND ROCK, TX 78664
0.00 mi 98% similar Same subdivision
6 bed 6 bath 2,124 sqft Built 2017
Raw Value $641,048
Adjusted Value $538,588

Adjusted -$100,460 for 517 sqft less living space and -$2,000 for being older. Net adjustment: -$102,460.

1316/1318 ZEPHYR LN, ROUND ROCK, TX 78664
0.00 mi 91% similar Same subdivision
3 bed 4 bath 1,971 sqft Built 1986
Raw Value $370,703
Adjusted Value $328,978

Adjusted -$70,730 for 364 sqft less living space and +$29,005 for being newer. Net adjustment: -$41,725.

1312/1314 ZEPHYR LN, ROUND ROCK, TX 78664
0.00 mi 91% similar Same subdivision
3 bed 4 bath 1,971 sqft Built 1986
Raw Value $370,703
Adjusted Value $328,978

Adjusted -$70,730 for 364 sqft less living space and +$29,005 for being newer. Net adjustment: -$41,725.

3 bed 2 bath 1,583 sqft Built 1991
Raw Value $291,235
Adjusted Value $319,902

Adjusted +$4,663 for 24 sqft more living space and +$24,004 for being newer. Net adjustment: +$28,667.

3 bed 2 bath 1,355 sqft Built 2002
Raw Value $307,804
Adjusted Value $369,773

Adjusted +$48,967 for 252 sqft more living space and +$13,002 for being newer. Net adjustment: +$61,969.

The Neighborhood

This home is valued 64.3% above the R450X - Round Rock East - Duplex median of $355,449. With 836 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.7% over the past year.

R450X - Round Rock East - Duplex

outlier high
836 Properties
$355,449 Median Value
-8.7% YoY Change
0% Have Pool
84% Have Garage
This Home
$583,856
Median
$355,449

This home is +64.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,505 across all districts. With a homestead exemption claimed, that drops to $9,147 — saving $1,358 per year. That's $762 per month a buyer should budget. The assessed value increased +1.3% vs the subdivision average of -8.7%. This above-average increase gives a protest opportunity score of 50 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$5,214
Round RockCity0.3720%$2,172
Williamson CountyCounty0.3694%$2,157
Austin Community Collegespecial0.1034%$604
Williamson County FM/RdCounty0.0443%$259
Upper Brushy Creek WCIDWater0.0170%$99
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$10,505
50 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $328,978 would pay approximately $2,053 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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