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

3741 DERBY TRL, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath2,912 sqftBuilt 2003

Property at a Glance

This home is estimated between $572,441 and $959,077, with a best estimate of $674,942. That places the property above the L498506D - VILLAGE AT MAYFIELD median of $510,992, in a neighborhood that declined 5.8% over the past year.

Estimated Value Range

$572,441 $959,077
Best Estimate
$674,942
WCAD Value
$600,946
High Confidence

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

Based on 5 comparable properties in L498506D - VILLAGE AT MAYFIELD, this home's estimated market value is between $572,441 and $959,077. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3839 DERBY TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,789 sqft Built 2003
Raw Value $538,150
Adjusted Value $572,441

Adjusted +$34,291 for 123 sqft more living space. Net adjustment: +$34,291.

3800 DERBY TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,187 sqft Built 2003
Raw Value $472,820
Adjusted Value $674,942

Adjusted +$202,122 for 725 sqft more living space. Net adjustment: +$202,122.

3624 DERBY TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,418 sqft Built 2004
Raw Value $487,195
Adjusted Value $624,646

Adjusted +$137,722 for 494 sqft more living space and -$271 for being older. Net adjustment: +$137,451.

3724 DERBY TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,710 sqft Built 2004
Raw Value $624,244
Adjusted Value $959,077

Adjusted +$335,104 for 1,202 sqft more living space and -$271 for being older. Net adjustment: +$334,833.

3812 DERBY TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,072 sqft Built 2007
Raw Value $637,232
Adjusted Value $870,332

Adjusted +$234,183 for 840 sqft more living space and -$1,083 for being older. Net adjustment: +$233,100.

The Neighborhood

This home is valued 17.6% above the L498506D - VILLAGE AT MAYFIELD median of $510,992. With 696 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 5.8% over the past year.

L498506D - VILLAGE AT MAYFIELD

above average
696 Properties
$510,992 Median Value
-5.8% YoY Change
1% Have Pool
100% Have Garage
This Home
$600,946
Median
$510,992

This home is +17.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,977 across all districts. With a homestead exemption claimed, that drops to $10,345 — saving $1,632 per year. That's $862 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
Leander ISDSchool1.0869%$6,532
Round RockCity0.3720%$2,236
Williamson CountyCounty0.3694%$2,220
Austin Community Collegespecial0.1034%$621
Williamson County FM/RdCounty0.0443%$266
Upper Brushy Creek WCIDWater0.0170%$102
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9931%$11,977

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $674,942 would pay approximately $4,213 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