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3620 DERBY TRL, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,741 sqftBuilt 2004

Property at a Glance

This home is estimated between $298,455 and $600,580, with a best estimate of $421,894. That places the property below the L498506D - VILLAGE AT MAYFIELD median of $510,992, in a neighborhood that declined 5.8% over the past year.

Estimated Value Range

$298,455 $600,580
Best Estimate
$421,894
WCAD Value
$394,345
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 $298,455 and $600,580. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

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 $348,751

Adjusted -$124,340 for 446 sqft less living space and +$271 for being newer. Net adjustment: -$124,069.

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 $600,580

Adjusted +$19,794 for 71 sqft more living space and -$271 for being older. Net adjustment: +$19,523.

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 $298,455

Adjusted -$188,740 for 677 sqft less living space. Net adjustment: -$188,740.

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 $421,894

Adjusted -$65,794 for 236 sqft less living space. Net adjustment: -$65,794.

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 $542,506

Adjusted -$49,903 for 179 sqft less living space and -$271 for being older. Net adjustment: -$50,174.

The Neighborhood

This home is valued 22.8% below the L498506D - VILLAGE AT MAYFIELD median of $510,992. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 5.8% over the past year.

L498506D - VILLAGE AT MAYFIELD

below average
696 Properties
$510,992 Median Value
-5.8% YoY Change
1% Have Pool
100% Have Garage
This Home
$394,345
Median
$510,992

This home is -22.8% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,860 across all districts. With a homestead exemption claimed, that drops to $6,265 — saving $1,595 per year. That's $522 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%$4,286
Round RockCity0.3720%$1,467
Williamson CountyCounty0.3694%$1,457
Austin Community Collegespecial0.1034%$408
Williamson County FM/RdCounty0.0443%$175
Upper Brushy Creek WCIDWater0.0170%$67
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9931%$7,860

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $421,894 would pay approximately $2,633 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.

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