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

1001 PENNY LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath2,368 sqftBuilt 1976

Property at a Glance

This home is estimated between $519,495 and $705,147, with a best estimate of $575,996. That places the property above 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

$519,495 $705,147
Best Estimate
$575,996
WCAD Value
$461,500
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 $519,495 and $705,147. 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 $542,652

Adjusted +$18,516 for 78 sqft more living space and -$7,101 for being older. Net adjustment: +$11,415.

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 $519,495

Adjusted +$118,930 for 501 sqft more living space and -$2,367 for being older. Net adjustment: +$116,563.

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 $705,147

Adjusted +$158,573 for 668 sqft more living space. Net adjustment: +$158,573.

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 $575,996

Adjusted +$148,365 for 625 sqft more living space. Net adjustment: +$148,365.

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 $579,978

Adjusted +$148,128 for 624 sqft more living space. Net adjustment: +$148,128.

The Neighborhood

This home is valued 3.2% 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
$461,500
Median
$476,515

This home is -3.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,304 across all districts. With a homestead exemption claimed, that drops to $6,968 — saving $1,336 per year. That's $581 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%$4,122
Round RockCity0.3720%$1,717
Williamson CountyCounty0.3694%$1,705
Austin Community Collegespecial0.1034%$477
Williamson County FM/RdCounty0.0443%$205
Upper Brushy Creek WCIDWater0.0170%$78
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,304

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $575,996 would pay approximately $3,595 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