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

3738 TOP ROCK LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,641 sqftBuilt 1996

Property at a Glance

This home is estimated between $322,264 and $502,966, with a best estimate of $365,046. That places the property below the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194, in a neighborhood that declined 10.9% over the past year.

Estimated Value Range

$322,264 $502,966
Best Estimate
$365,046
WCAD Value
$308,829
High Confidence

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

Based on 5 comparable properties in R107503F - PRESERVE AT STONE OAK - PH 3 & 4, this home's estimated market value is between $322,264 and $502,966. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3730 TOP ROCK LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,036 sqft Built 1996
Raw Value $425,124
Adjusted Value $344,713

Adjusted -$80,411 for 395 sqft less living space. Net adjustment: -$80,411.

3734 TOP ROCK LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,236 sqft Built 1996
Raw Value $282,599
Adjusted Value $365,046

Adjusted +$82,447 for 405 sqft more living space. Net adjustment: +$82,447.

3768 TOP ROCK LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,540 sqft Built 1999
Raw Value $297,501
Adjusted Value $322,264

Adjusted +$20,561 for 101 sqft more living space and +$4,202 for being newer. Net adjustment: +$24,763.

3742 TOP ROCK LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,445 sqft Built 1996
Raw Value $456,413
Adjusted Value $496,313

Adjusted +$39,900 for 196 sqft more living space. Net adjustment: +$39,900.

3720 TOP ROCK LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,445 sqft Built 1997
Raw Value $461,665
Adjusted Value $502,966

Adjusted +$39,900 for 196 sqft more living space and +$1,401 for being newer. Net adjustment: +$41,301.

The Neighborhood

This home is valued 16.1% below the R107503F - PRESERVE AT STONE OAK - PH 3 & 4 median of $368,194. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 10.9% over the past year.

R107503F - PRESERVE AT STONE OAK - PH 3 & 4

below average
1,045 Properties
$368,194 Median Value
-10.9% YoY Change
1% Have Pool
99% Have Garage
This Home
$308,829
Median
$368,194

This home is -16.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,557 across all districts. With a homestead exemption claimed, that drops to $4,249 — saving $1,308 per year. That's $354 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%$2,758
Round RockCity0.3720%$1,149
Williamson CountyCounty0.3694%$1,141
Austin Community Collegespecial0.1034%$319
Williamson County FM/RdCounty0.0443%$137
Upper Brushy Creek WCIDWater0.0170%$53
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,557

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $365,046 would pay approximately $2,279 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