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603 COUNTRY AIRE DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed4 bath2,004 sqftBuilt 1983

Property at a Glance

This home is estimated between $386,385 and $457,057, with a best estimate of $428,384. 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

$386,385 $457,057
Best Estimate
$428,384
WCAD Value
$357,173
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in R450X - Round Rock East - Duplex. The estimated range of $386,385 and $457,057 should be treated as a rough guide.

Comparable Properties (5)

601/603 GREENLAWN BLVD, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 1,821 sqft Built 1985
Raw Value $352,826
Adjusted Value $386,385

Adjusted +$35,559 for 183 sqft more living space and -$2,000 for being older. Net adjustment: +$33,559.

3 bed 2 bath 1,913 sqft Built 1975
Raw Value $389,587
Adjusted Value $457,057

Adjusted +$17,682 for 91 sqft more living space and +$8,001 for being newer and +$41,787 for having a garage. Net adjustment: +$67,470.

3 bed 2 bath 1,924 sqft Built 1967
Raw Value $367,251
Adjusted Value $398,799

Adjusted +$15,545 for 80 sqft more living space and +$16,003 for being newer. Net adjustment: +$31,548.

3 bed 2 bath 1,704 sqft Built 1976
Raw Value $349,687
Adjusted Value $456,769

Adjusted +$58,294 for 300 sqft more living space and +$7,001 for being newer and +$41,787 for having a garage. Net adjustment: +$107,082.

3 bed 2 bath 1,571 sqft Built 1978
Raw Value $339,246
Adjusted Value $428,384

Adjusted +$84,137 for 433 sqft more living space and +$5,001 for being newer. Net adjustment: +$89,138.

The Neighborhood

This home is in line with the R450X - Round Rock East - Duplex median of $355,449. 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
$357,173
Median
$355,449

This home is +0.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,427 across all districts. With a homestead exemption claimed, that drops to $5,110 — saving $1,317 per year. That's $426 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%$3,190
Round RockCity0.3720%$1,329
Williamson CountyCounty0.3694%$1,320
Austin Community Collegespecial0.1034%$369
Williamson County FM/RdCounty0.0443%$158
Upper Brushy Creek WCIDWater0.0170%$61
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,427

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $428,384 would pay approximately $2,674 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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