Beta Williamson County, TX only — data and coverage are limited during early access.

401/403 COUNTRY AIRE DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed4 bath1,936 sqftBuilt 1985

Property at a Glance

This home is estimated between $301,394 and $338,757, with a best estimate of $302,603. 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

$301,394 $338,757
Best Estimate
$302,603
WCAD Value
$338,011
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 $301,394 and $338,757 should be treated as a rough guide.

Comparable Properties (5)

401/403 GREENLAWN BLVD, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 1,812 sqft Built 1984
Raw Value $355,449
Adjusted Value $338,757

Adjusted +$24,095 for 124 sqft more living space and +$1,000 for being newer and -$41,787 for no garage. Net adjustment: -$16,692.

3 bed 2 bath 1,942 sqft Built 2020
Raw Value $389,776
Adjusted Value $311,817

Adjusted -$1,166 for 6 sqft less living space and -$35,006 for being older and -$41,787 for no garage. Net adjustment: -$77,959.

3 bed 2 bath 1,966 sqft Built 2020
Raw Value $385,225
Adjusted Value $302,603

Adjusted -$5,829 for 30 sqft less living space and -$35,006 for being older and -$41,787 for no garage. Net adjustment: -$82,622.

3 bed 2 bath 1,980 sqft Built 2020
Raw Value $387,513
Adjusted Value $302,170

Adjusted -$8,550 for 44 sqft less living space and -$35,006 for being older and -$41,787 for no garage. Net adjustment: -$85,343.

3 bed 2 bath 1,992 sqft Built 2020
Raw Value $389,068
Adjusted Value $301,394

Adjusted -$10,881 for 56 sqft less living space and -$35,006 for being older and -$41,787 for no garage. Net adjustment: -$87,674.

The Neighborhood

This home is valued 4.9% below the R450X - Round Rock East - Duplex median of $355,449. That positions it competitively for buyers comparing within the neighborhood. 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
$338,011
Median
$355,449

This home is -4.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $6,082 across all districts. With a homestead exemption claimed, that drops to $4,769 — saving $1,313 per year. That's $397 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%$3,019
Round RockCity0.3720%$1,257
Williamson CountyCounty0.3694%$1,249
Austin Community Collegespecial0.1034%$350
Williamson County FM/RdCounty0.0443%$150
Upper Brushy Creek WCIDWater0.0170%$57
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,082

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $302,603 would pay approximately $1,889 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.

View full property details