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3803 SEBASTIAN CV, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,868 sqftBuilt 2005

Property at a Glance

This home is estimated between $305,891 and $567,974, with a best estimate of $310,547. 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

$305,891 $567,974
Best Estimate
$310,547
WCAD Value
$474,017
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 $305,891 and $567,974. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3815 SEBASTIAN CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2,451 sqft Built 2004
Raw Value $468,154
Adjusted Value $305,891

Adjusted -$162,534 for 583 sqft less living space and +$271 for being newer. Net adjustment: -$162,263.

3807 SEBASTIAN CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,439 sqft Built 2004
Raw Value $469,464
Adjusted Value $310,547

Adjusted -$159,188 for 571 sqft less living space and +$271 for being newer. Net adjustment: -$158,917.

3810 SEBASTIAN CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,148 sqft Built 2006
Raw Value $646,306
Adjusted Value $567,974

Adjusted -$78,061 for 280 sqft less living space and -$271 for being older. Net adjustment: -$78,332.

3818 SEBASTIAN CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,500 sqft Built 2005
Raw Value $486,730
Adjusted Value $310,535

Adjusted -$176,195 for 632 sqft less living space. Net adjustment: -$176,195.

3830 SEBASTIAN CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,322 sqft Built 2006
Raw Value $464,317
Adjusted Value $337,476

Adjusted -$126,570 for 454 sqft less living space and -$271 for being older. Net adjustment: -$126,841.

The Neighborhood

This home is valued 7.2% 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

typical
696 Properties
$510,992 Median Value
-5.8% YoY Change
1% Have Pool
100% Have Garage
This Home
$474,017
Median
$510,992

This home is -7.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,529 across all districts. With a homestead exemption claimed, that drops to $7,191 — saving $1,338 per year. That's $599 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%$4,233
Round RockCity0.3720%$1,763
Williamson CountyCounty0.3694%$1,751
Austin Community Collegespecial0.1034%$490
Williamson County FM/RdCounty0.0443%$210
Upper Brushy Creek WCIDWater0.0170%$81
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,529

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $310,547 would pay approximately $1,938 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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