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3802 SPANISH BAY CT, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath2,436 sqftBuilt 2002

Property at a Glance

This home is estimated between $485,296 and $709,002, with a best estimate of $666,985. That places the property above the R550600D - Forest Creek Sec 15,16,19,31 median of $514,276, in a neighborhood that declined 8.7% over the past year.

Estimated Value Range

$485,296 $709,002
Best Estimate
$666,985
WCAD Value
$472,850
High Confidence

Based on 5 comparable properties(5 in the same subdivision)

Based on 5 comparable properties in R550600D - Forest Creek Sec 15,16,19,31, this home's estimated market value is between $485,296 and $709,002. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3806 SPANISH BAY CT, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,529 sqft Built 2002
Raw Value $693,593
Adjusted Value $666,985

Adjusted -$26,608 for 93 sqft less living space. Net adjustment: -$26,608.

3807 SPANISH BAY CT, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,103 sqft Built 2005
Raw Value $577,310
Adjusted Value $666,689

Adjusted +$95,273 for 333 sqft more living space and -$5,894 for being older. Net adjustment: +$89,379.

3804 SPANISH BAY CT, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,920 sqft Built 2003
Raw Value $542,532
Adjusted Value $688,198

Adjusted +$147,631 for 516 sqft more living space and -$1,965 for being older. Net adjustment: +$145,666.

3803 SPANISH BAY CT, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 3 bath 1,796 sqft Built 2005
Raw Value $531,788
Adjusted Value $709,002

Adjusted +$183,108 for 640 sqft more living space and -$5,894 for being older. Net adjustment: +$177,214.

3801 SPANISH BAY CT, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,339 sqft Built 2003
Raw Value $459,509
Adjusted Value $485,296

Adjusted +$27,752 for 97 sqft more living space and -$1,965 for being older. Net adjustment: +$25,787.

The Neighborhood

This home is valued 8.1% below the R550600D - Forest Creek Sec 15,16,19,31 median of $514,276. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 8.7% over the past year.

R550600D - Forest Creek Sec 15,16,19,31

typical
274 Properties
$514,276 Median Value
-8.7% YoY Change
0% Have Pool
99% Have Garage
This Home
$472,850
Median
$514,276

This home is -8.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,508 across all districts. With a homestead exemption claimed, that drops to $7,170 — saving $1,338 per year. That's $598 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%$4,223
Round RockCity0.3720%$1,759
Williamson CountyCounty0.3694%$1,747
Austin Community Collegespecial0.1034%$489
Williamson County FM/RdCounty0.0443%$210
Upper Brushy Creek WCIDWater0.0170%$80
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,508

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $666,985 would pay approximately $4,163 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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