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

3609 DERBY TRL, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath1,726 sqftBuilt 2005

Property at a Glance

This home is estimated between $242,338 and $628,976, with a best estimate of $538,595. 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

$242,338 $628,976
Best Estimate
$538,595
WCAD Value
$615,229
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 $242,338 and $628,976. 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 $242,338

Adjusted -$296,353 for 1,063 sqft less living space and +$541 for being newer. Net adjustment: -$295,812.

3608 DERBY TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,670 sqft Built 2005
Raw Value $581,057
Adjusted Value $596,669

Adjusted +$15,612 for 56 sqft more living space. Net adjustment: +$15,612.

3748 DERBY TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,977 sqft Built 2004
Raw Value $487,688
Adjusted Value $417,983

Adjusted -$69,976 for 251 sqft less living space and +$271 for being newer. Net adjustment: -$69,705.

3821 DERBY TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,920 sqft Built 2005
Raw Value $592,680
Adjusted Value $538,595

Adjusted -$54,085 for 194 sqft less living space. Net adjustment: -$54,085.

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 $628,976

Adjusted +$4,461 for 16 sqft more living space and +$271 for being newer. Net adjustment: +$4,732.

The Neighborhood

This home is valued 20.4% 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
$615,229
Median
$510,992

This home is +20.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,262 across all districts. With a homestead exemption claimed, that drops to $10,627 — saving $1,635 per year. That's $886 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%$6,687
Round RockCity0.3720%$2,289
Williamson CountyCounty0.3694%$2,273
Austin Community Collegespecial0.1034%$636
Williamson County FM/RdCounty0.0443%$273
Upper Brushy Creek WCIDWater0.0170%$105
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9931%$12,262

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $538,595 would pay approximately $3,362 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 4/19/2026.

View full property details