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503 WESTMINSTER PL, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,366 sqftBuilt 1979

Property at a Glance

This home is estimated between $249,778 and $324,121, with a best estimate of $305,008. That places the property below the R604482H - KENSINGTON / WINDY TERRACE 1985 AND OLDER median of $312,111, in a neighborhood that declined 9.7% over the past year.

Estimated Value Range

$249,778 $324,121
Best Estimate
$305,008
WCAD Value
$272,458
High Confidence

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

Based on 5 comparable properties in R604482H - KENSINGTON / WINDY TERRACE 1985 AND OLDER, this home's estimated market value is between $249,778 and $324,121. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

706 WESTMINSTER PL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,324 sqft Built 1982
Raw Value $315,082
Adjusted Value $324,121

Adjusted +$8,824 for 42 sqft more living space and +$215 for being newer. Net adjustment: +$9,039.

605 GREENWICH PL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,370 sqft Built 1982
Raw Value $323,082
Adjusted Value $322,457

Adjusted -$840 for 4 sqft less living space and +$215 for being newer. Net adjustment: -$625.

606 WESTMINSTER PL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,407 sqft Built 1983
Raw Value $313,335
Adjusted Value $305,008

Adjusted -$8,614 for 41 sqft less living space and +$287 for being newer. Net adjustment: -$8,327.

500 GREENWICH PL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,524 sqft Built 1981
Raw Value $282,828
Adjusted Value $249,778

Adjusted -$33,194 for 158 sqft less living space and +$144 for being newer. Net adjustment: -$33,050.

701 GREENWICH PL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,310 sqft Built 1983
Raw Value $266,838
Adjusted Value $278,890

Adjusted +$11,765 for 56 sqft more living space and +$287 for being newer. Net adjustment: +$12,052.

The Neighborhood

This home is valued 12.7% below the R604482H - KENSINGTON / WINDY TERRACE 1985 AND OLDER median of $312,111. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 9.7% over the past year.

R604482H - KENSINGTON / WINDY TERRACE 1985 AND OLDER

typical
459 Properties
$312,111 Median Value
-9.7% YoY Change
2% Have Pool
94% Have Garage
This Home
$272,458
Median
$312,111

This home is -12.7% below the subdivision median.

Tax Analysis

The estimated annual property tax is $4,902 across all districts. With a homestead exemption claimed, that drops to $3,602 — saving $1,300 per year. That's $300 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%$2,433
Round RockCity0.3720%$1,014
Williamson CountyCounty0.3694%$1,007
Austin Community Collegespecial0.1034%$282
Williamson County FM/RdCounty0.0443%$121
Upper Brushy Creek WCIDWater0.0170%$46
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$4,902

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $305,008 would pay approximately $1,904 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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