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

1505 CATHERINE CT, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,218 sqftBuilt 1999

Property at a Glance

This home is estimated between $246,883 and $412,943, with a best estimate of $276,426. That places the property below the R612496H - Windy Park Sec 1 & 2 median of $288,718, in a neighborhood that declined 8.5% over the past year.

Estimated Value Range

$246,883 $412,943
Best Estimate
$276,426
WCAD Value
$280,950
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $246,883 and $412,943. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

1501 CATHERINE CT, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,303 sqft Built 1999
Raw Value $297,905
Adjusted Value $276,390

Adjusted -$21,515 for 85 sqft less living space. Net adjustment: -$21,515.

1507 CATHERINE CT, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,420 sqft Built 1999
Raw Value $298,012
Adjusted Value $246,883

Adjusted -$51,129 for 202 sqft less living space. Net adjustment: -$51,129.

1500 CINDY CT, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,049 sqft Built 1999
Raw Value $291,818
Adjusted Value $334,594

Adjusted +$42,776 for 169 sqft more living space. Net adjustment: +$42,776.

1509 CATHERINE CT, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 813 sqft Built 1999
Raw Value $310,432
Adjusted Value $412,943

Adjusted +$102,511 for 405 sqft more living space. Net adjustment: +$102,511.

3 bed 2 bath 1,245 sqft Built 1999
Raw Value $283,260
Adjusted Value $276,426

Adjusted -$6,834 for 27 sqft less living space. Net adjustment: -$6,834.

The Neighborhood

This home is valued 2.7% below the R612496H - Windy Park Sec 1 & 2 median of $288,718. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 8.5% over the past year.

R612496H - Windy Park Sec 1 & 2

typical
247 Properties
$288,718 Median Value
-8.5% YoY Change
0% Have Pool
96% Have Garage
This Home
$280,950
Median
$288,718

This home is -2.7% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,055 across all districts. With a homestead exemption claimed, that drops to $3,753 — saving $1,302 per year. That's $313 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%$2,509
Round RockCity0.3720%$1,045
Williamson CountyCounty0.3694%$1,038
Austin Community Collegespecial0.1034%$291
Williamson County FM/RdCounty0.0443%$125
Upper Brushy Creek WCIDWater0.0170%$48
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,055

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $276,426 would pay approximately $1,725 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