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3818 VALLARTA LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,791 sqftBuilt 2005

Property at a Glance

This home is estimated between $262,359 and $636,915, with a best estimate of $370,603. 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

$262,359 $636,915
Best Estimate
$370,603
WCAD Value
$587,655
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 $262,359 and $636,915. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3814 VALLARTA LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,056 sqft Built 2004
Raw Value $406,433
Adjusted Value $332,825

Adjusted -$73,879 for 265 sqft less living space and +$271 for being newer. Net adjustment: -$73,608.

3822 VALLARTA LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,007 sqft Built 2006
Raw Value $431,092
Adjusted Value $370,603

Adjusted -$60,218 for 216 sqft less living space and -$271 for being older. Net adjustment: -$60,489.

3810 VALLARTA LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,230 sqft Built 2005
Raw Value $480,514
Adjusted Value $636,915

Adjusted +$156,401 for 561 sqft more living space. Net adjustment: +$156,401.

3826 VALLARTA LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
3 bed 2 bath 2,633 sqft Built 2005
Raw Value $497,099
Adjusted Value $262,359

Adjusted -$234,740 for 842 sqft less living space. Net adjustment: -$234,740.

3806 VALLARTA LN, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,838 sqft Built 2005
Raw Value $404,667
Adjusted Value $391,564

Adjusted -$13,103 for 47 sqft less living space. Net adjustment: -$13,103.

The Neighborhood

This home is valued 15.0% 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
$587,655
Median
$510,992

This home is +15.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,574 across all districts. With a homestead exemption claimed, that drops to $9,215 — saving $1,359 per year. That's $768 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%$5,248
Round RockCity0.3720%$2,186
Williamson CountyCounty0.3694%$2,171
Austin Community Collegespecial0.1034%$608
Williamson County FM/RdCounty0.0443%$261
Upper Brushy Creek WCIDWater0.0170%$100
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$10,574

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $370,603 would pay approximately $2,313 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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