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

901 PENNY LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath2,343 sqftBuilt 1976

Property at a Glance

This home is estimated between $388,143 and $910,231, with a best estimate of $523,645. 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

$388,143 $910,231
Best Estimate
$523,645
WCAD Value
$499,487
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 $388,143 and $910,231. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

901 DEER RUN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,792 sqft Built 1977
Raw Value $395,213
Adjusted Value $523,645

Adjusted +$130,799 for 551 sqft more living space and -$2,367 for being older. Net adjustment: +$128,432.

901 WALSH LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,989 sqft Built 1977
Raw Value $436,035
Adjusted Value $517,702

Adjusted +$84,034 for 354 sqft more living space and -$2,367 for being older. Net adjustment: +$81,667.

901 LIME ROCK DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,665 sqft Built 1977
Raw Value $485,434
Adjusted Value $644,014

Adjusted +$160,947 for 678 sqft more living space and -$2,367 for being older. Net adjustment: +$158,580.

3 bed 2 bath 2,719 sqft Built 1990
Raw Value $510,539
Adjusted Value $388,143

Adjusted -$89,257 for 376 sqft less living space and -$33,139 for being older. Net adjustment: -$122,396.

707 LIME ROCK DR, ROUND ROCK, TX 78681
0.12 mi 93% similar Same subdivision
4 bed 2 bath 1,160 sqft Built 1977
Raw Value $631,772
Adjusted Value $910,231

Adjusted +$280,826 for 1,183 sqft more living space and -$2,367 for being older. Net adjustment: +$278,459.

The Neighborhood

This home is valued 4.8% above the R325576F - ROUND ROCK WEST/LAKE CREEK WEST/SHADOW BROOK median of $476,515. With 822 homes in the subdivision, the property sits in the upper tier. 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
$499,487
Median
$476,515

This home is +4.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $8,987 across all districts. With a homestead exemption claimed, that drops to $7,645 — saving $1,342 per year. That's $637 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%$4,461
Round RockCity0.3720%$1,858
Williamson CountyCounty0.3694%$1,845
Austin Community Collegespecial0.1034%$516
Williamson County FM/RdCounty0.0443%$221
Upper Brushy Creek WCIDWater0.0170%$85
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,987

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $523,645 would pay approximately $3,269 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