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1316/1318 ZEPHYR LN, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed4 bath1,971 sqftBuilt 1986

Property at a Glance

This home is estimated between $369,853 and $625,581, with a best estimate of $379,525. That places the property above the R450X - Round Rock East - Duplex median of $355,449, in a neighborhood that declined 8.7% over the past year.

Estimated Value Range

$369,853 $625,581
Best Estimate
$379,525
WCAD Value
$370,703
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in R450X - Round Rock East - Duplex. The estimated range of $369,853 and $625,581 should be treated as a rough guide.

Comparable Properties (5)

3 bed 1,775 sqft Built 1986
Raw Value $341,440
Adjusted Value $379,525

Adjusted +$38,085 for 196 sqft more living space. Net adjustment: +$38,085.

1312/1314 ZEPHYR LN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 1,971 sqft Built 1986
Raw Value $370,703
Adjusted Value $370,703

This comparable closely matches the subject property's features.

1408 ZEPHYR LN, ROUND ROCK, TX 78664
0.00 mi 91% similar Same subdivision
5 bed 4 bath 1,607 sqft Built 2015
Raw Value $583,856
Adjusted Value $625,581

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

3 bed 2 bath 1,581 sqft Built 1985
Raw Value $293,071
Adjusted Value $369,853

Adjusted +$75,782 for 390 sqft more living space and +$1,000 for being newer. Net adjustment: +$76,782.

3 bed 2 bath 1,519 sqft Built 1985
Raw Value $341,382
Adjusted Value $430,211

Adjusted +$87,829 for 452 sqft more living space and +$1,000 for being newer. Net adjustment: +$88,829.

The Neighborhood

This home is valued 4.3% 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

typical
836 Properties
$355,449 Median Value
-8.7% YoY Change
0% Have Pool
84% Have Garage
This Home
$370,703
Median
$355,449

This home is +4.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,670 across all districts. With a homestead exemption claimed, that drops to $5,351 — saving $1,319 per year. That's $446 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%$3,311
Round RockCity0.3720%$1,379
Williamson CountyCounty0.3694%$1,370
Austin Community Collegespecial0.1034%$383
Williamson County FM/RdCounty0.0443%$164
Upper Brushy Creek WCIDWater0.0170%$63
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,670

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $379,525 would pay approximately $2,369 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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