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3604 COBALT CV, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,370 sqftBuilt 2003

Property at a Glance

This home is estimated between $244,917 and $479,469, with a best estimate of $334,639. 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

$244,917 $479,469
Best Estimate
$334,639
WCAD Value
$606,680
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 $244,917 and $479,469. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3601 COBALT CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,835 sqft Built 2003
Raw Value $389,272
Adjusted Value $259,635

Adjusted -$129,637 for 465 sqft less living space. Net adjustment: -$129,637.

3605 COBALT CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,013 sqft Built 2003
Raw Value $424,178
Adjusted Value $244,917

Adjusted -$179,261 for 643 sqft less living space. Net adjustment: -$179,261.

3803 SEBASTIAN CV, ROUND ROCK, TX 78681
0.08 mi 100% similar Same subdivision
4 bed 2 bath 1,868 sqft Built 2005
Raw Value $474,017
Adjusted Value $334,639

Adjusted -$138,837 for 498 sqft less living space and -$541 for being older. Net adjustment: -$139,378.

3826 SEBASTIAN CV, ROUND ROCK, TX 78681
0.08 mi 100% similar Same subdivision
4 bed 2 bath 1,710 sqft Built 2004
Raw Value $544,357
Adjusted Value $449,298

Adjusted -$94,788 for 340 sqft less living space and -$271 for being older. Net adjustment: -$95,059.

3811 SEBASTIAN CV, ROUND ROCK, TX 78681
0.08 mi 100% similar Same subdivision
4 bed 3 bath 1,650 sqft Built 2007
Raw Value $558,613
Adjusted Value $479,469

Adjusted -$78,061 for 280 sqft less living space and -$1,083 for being older. Net adjustment: -$79,144.

The Neighborhood

This home is valued 18.7% 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
$606,680
Median
$510,992

This home is +18.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,916 across all districts. With a homestead exemption claimed, that drops to $9,553 — saving $1,363 per year. That's $796 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%$5,418
Round RockCity0.3720%$2,257
Williamson CountyCounty0.3694%$2,241
Austin Community Collegespecial0.1034%$627
Williamson County FM/RdCounty0.0443%$269
Upper Brushy Creek WCIDWater0.0170%$103
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$10,916

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $334,639 would pay approximately $2,089 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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