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

2003 MONTCLAIR DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,650 sqftBuilt 1975

Property at a Glance

This home is estimated between $344,525 and $381,852, with a best estimate of $363,644. That places the property above the R605477I - South Park, Southern Terrace, Cushing PA median of $311,935, in a neighborhood that appreciated 0.3% over the past year.

Estimated Value Range

$344,525 $381,852
Best Estimate
$363,644
WCAD Value
$328,272
Low Confidence

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

There are 5 comparable properties within range, but few are in R605477I - South Park, Southern Terrace, Cushing PA. The estimated range of $344,525 and $381,852 should be treated as a rough guide.

Comparable Properties (5)

2007 DIXIE LN, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 1 bath 1,479 sqft Built 1982
Raw Value $294,084
Adjusted Value $381,852

Adjusted +$35,066 for 171 sqft more living space and -$18,034 for being older and +$70,736 for having a garage. Net adjustment: +$87,768.

3 bed 2 bath 1,608 sqft Built 1981
Raw Value $301,325
Adjusted Value $365,216

Adjusted +$8,613 for 42 sqft more living space and -$15,458 for being older and +$70,736 for having a garage. Net adjustment: +$63,891.

3 bed 2 bath 1,527 sqft Built 1978
Raw Value $337,641
Adjusted Value $355,135

Adjusted +$25,223 for 123 sqft more living space and -$7,729 for being older. Net adjustment: +$17,494.

3 bed 2 bath 1,608 sqft Built 1979
Raw Value $294,600
Adjusted Value $363,644

Adjusted +$8,613 for 42 sqft more living space and -$10,305 for being older and +$70,736 for having a garage. Net adjustment: +$69,044.

3 bed 2 bath 1,451 sqft Built 1980
Raw Value $316,599
Adjusted Value $344,525

Adjusted +$40,808 for 199 sqft more living space and -$12,882 for being older. Net adjustment: +$27,926.

The Neighborhood

This home is valued 5.2% above the R605477I - South Park, Southern Terrace, Cushing PA median of $311,935. With 125 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 0.3% over the past year.

R605477I - South Park, Southern Terrace, Cushing PA

typical
125 Properties
$311,935 Median Value
+0.3% YoY Change
2% Have Pool
61% Have Garage
This Home
$328,272
Median
$311,935

This home is +5.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $5,907 across all districts. With a homestead exemption claimed, that drops to $4,596 — saving $1,311 per year. That's $383 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%$2,932
Round RockCity0.3720%$1,221
Williamson CountyCounty0.3694%$1,213
Austin Community Collegespecial0.1034%$339
Williamson County FM/RdCounty0.0443%$146
Upper Brushy Creek WCIDWater0.0170%$56
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,907

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $363,644 would pay approximately $2,270 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