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

1003 PENNY LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,758 sqftBuilt 1976

Property at a Glance

This home is estimated between $374,690 and $560,342, with a best estimate of $431,192. That places the property below the R325576F - ROUND ROCK WEST/LAKE CREEK WEST/SHADOW BROOK median of $476,515, in a neighborhood that declined 5.9% over the past year.

Estimated Value Range

$374,690 $560,342
Best Estimate
$431,192
WCAD Value
$420,096
High Confidence

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

Based on 5 comparable properties in R325576F - ROUND ROCK WEST/LAKE CREEK WEST/SHADOW BROOK, this home's estimated market value is between $374,690 and $560,342. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1002 LAKEWOOD LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,290 sqft Built 1979
Raw Value $531,237
Adjusted Value $397,847

Adjusted -$126,289 for 532 sqft less living space and -$7,101 for being older. Net adjustment: -$133,390.

1002 PENNY LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,867 sqft Built 1977
Raw Value $402,932
Adjusted Value $374,690

Adjusted -$25,875 for 109 sqft less living space and -$2,367 for being older. Net adjustment: -$28,242.

1000 ST WILLIAMS AVE, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,700 sqft Built 1976
Raw Value $546,574
Adjusted Value $560,342

Adjusted +$13,768 for 58 sqft more living space. Net adjustment: +$13,768.

1002 ABBEY RD, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,743 sqft Built 1976
Raw Value $427,631
Adjusted Value $431,192

Adjusted +$3,561 for 15 sqft more living space. Net adjustment: +$3,561.

1004 DEER RUN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,744 sqft Built 1976
Raw Value $431,850
Adjusted Value $435,173

Adjusted +$3,323 for 14 sqft more living space. Net adjustment: +$3,323.

The Neighborhood

This home is valued 11.8% below the R325576F - ROUND ROCK WEST/LAKE CREEK WEST/SHADOW BROOK median of $476,515. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 5.9% over the past year.

R325576F - ROUND ROCK WEST/LAKE CREEK WEST/SHADOW BROOK

typical
822 Properties
$476,515 Median Value
-5.9% YoY Change
5% Have Pool
96% Have Garage
This Home
$420,096
Median
$476,515

This home is -11.8% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,559 across all districts. With a homestead exemption claimed, that drops to $6,231 — saving $1,328 per year. That's $519 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%$3,752
Round RockCity0.3720%$1,563
Williamson CountyCounty0.3694%$1,552
Austin Community Collegespecial0.1034%$434
Williamson County FM/RdCounty0.0443%$186
Upper Brushy Creek WCIDWater0.0170%$71
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,559

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $431,192 would pay approximately $2,691 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