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3921 VALLARTA LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath3,449 sqftBuilt 2004

Property at a Glance

This home is estimated between $714,339 and $785,517, with a best estimate of $728,262. 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

$714,339 $785,517
Best Estimate
$728,262
WCAD Value
$607,242
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 $714,339 and $785,517. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3917 VALLARTA LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 2 bath 2,852 sqft Built 2006
Raw Value $548,443
Adjusted Value $714,339

Adjusted +$166,437 for 597 sqft more living space and -$541 for being older. Net adjustment: +$165,896.

3930 VALLARTA LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
3 bed 2 bath 2,200 sqft Built 2005
Raw Value $437,581
Adjusted Value $785,517

Adjusted +$348,207 for 1,249 sqft more living space and -$271 for being older. Net adjustment: +$347,936.

3937 VALLARTA LN, ROUND ROCK, TX 78681
0.02 mi 100% similar Same subdivision
4 bed 2 bath 2,900 sqft Built 2005
Raw Value $575,478
Adjusted Value $728,262

Adjusted +$153,055 for 549 sqft more living space and -$271 for being older. Net adjustment: +$152,784.

3905 VALLARTA LN, ROUND ROCK, TX 78681
0.02 mi 100% similar Same subdivision
4 bed 2 bath 2,893 sqft Built 2006
Raw Value $578,265
Adjusted Value $732,731

Adjusted +$155,007 for 556 sqft more living space and -$541 for being older. Net adjustment: +$154,466.

3901 VALLARTA LN, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
3 bed 2 bath 3,031 sqft Built 2004
Raw Value $603,714
Adjusted Value $720,248

Adjusted +$116,534 for 418 sqft more living space. Net adjustment: +$116,534.

The Neighborhood

This home is valued 18.8% 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
$607,242
Median
$510,992

This home is +18.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,926 across all districts. With a homestead exemption claimed, that drops to $9,563 — saving $1,363 per year. That's $797 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%$5,423
Round RockCity0.3720%$2,259
Williamson CountyCounty0.3694%$2,243
Austin Community Collegespecial0.1034%$628
Williamson County FM/RdCounty0.0443%$269
Upper Brushy Creek WCIDWater0.0170%$103
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$10,926

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $728,262 would pay approximately $4,546 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.

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