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3909 VALLARTA LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath1,479 sqftBuilt 2007

Property at a Glance

This home is estimated between $493,954 and $605,422, with a best estimate of $539,692. 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

$493,954 $605,422
Best Estimate
$539,692
WCAD Value
$612,691
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 $493,954 and $605,422. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3913 VALLARTA LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,616 sqft Built 2007
Raw Value $555,248
Adjusted Value $517,054

Adjusted -$38,194 for 137 sqft less living space. Net adjustment: -$38,194.

3925 VALLARTA LN, ROUND ROCK, TX 78681
0.02 mi 100% similar Same subdivision
4 bed 2 bath 1,992 sqft Built 2006
Raw Value $682,440
Adjusted Value $539,692

Adjusted -$143,019 for 513 sqft less living space and +$271 for being newer. Net adjustment: -$142,748.

3804 OCTAVIA LN, ROUND ROCK, TX 78681
0.02 mi 100% similar Same subdivision
4 bed 3 bath 1,630 sqft Built 2006
Raw Value $535,780
Adjusted Value $493,954

Adjusted -$42,097 for 151 sqft less living space and +$271 for being newer. Net adjustment: -$41,826.

3808 OCTAVIA LN, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,657 sqft Built 2007
Raw Value $607,036
Adjusted Value $557,412

Adjusted -$49,624 for 178 sqft less living space. Net adjustment: -$49,624.

3929 VALLARTA LN, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,467 sqft Built 2006
Raw Value $601,806
Adjusted Value $605,422

Adjusted +$3,345 for 12 sqft more living space and +$271 for being newer. Net adjustment: +$3,616.

The Neighborhood

This home is valued 19.9% 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
$612,691
Median
$510,992

This home is +19.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,024 across all districts. With a homestead exemption claimed, that drops to $9,660 — saving $1,364 per year. That's $805 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%$5,472
Round RockCity0.3720%$2,279
Williamson CountyCounty0.3694%$2,264
Austin Community Collegespecial0.1034%$634
Williamson County FM/RdCounty0.0443%$272
Upper Brushy Creek WCIDWater0.0170%$104
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$11,024

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $539,692 would pay approximately $3,369 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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