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3805 SPANISH BAY CT, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath1,226 sqftBuilt 2002

Property at a Glance

This home is estimated between $317,731 and $570,927, with a best estimate of $387,294. That places the property below 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

$317,731 $570,927
Best Estimate
$387,294
WCAD Value
$583,539
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 $317,731 and $570,927. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3807 SPYGLASS CV, ROUND ROCK, TX 78664
0.06 mi 100% similar Same subdivision
4 bed 3 bath 1,219 sqft Built 2002
Raw Value $553,597
Adjusted Value $555,600

Adjusted +$2,003 for 7 sqft more living space. Net adjustment: +$2,003.

3808 SPYGLASS CV, ROUND ROCK, TX 78664
0.06 mi 100% similar Same subdivision
4 bed 3 bath 1,217 sqft Built 2002
Raw Value $568,352
Adjusted Value $570,927

Adjusted +$2,575 for 9 sqft more living space. Net adjustment: +$2,575.

3806 SPYGLASS CV, ROUND ROCK, TX 78664
0.06 mi 100% similar Same subdivision
4 bed 3 bath 1,622 sqft Built 2005
Raw Value $506,486
Adjusted Value $387,294

Adjusted -$113,298 for 396 sqft less living space and -$5,894 for being older. Net adjustment: -$119,192.

3802 SPYGLASS CV, ROUND ROCK, TX 78664
0.06 mi 100% similar Same subdivision
4 bed 2 bath 1,634 sqft Built 2004
Raw Value $474,694
Adjusted Value $354,033

Adjusted -$116,731 for 408 sqft less living space and -$3,930 for being older. Net adjustment: -$120,661.

3803 PEBBLE CT, ROUND ROCK, TX 78664
0.12 mi 100% similar Same subdivision
4 bed 3 bath 2,047 sqft Built 2002
Raw Value $552,624
Adjusted Value $317,731

Adjusted -$234,893 for 821 sqft less living space. Net adjustment: -$234,893.

The Neighborhood

This home is valued 13.5% above the R550600D - Forest Creek Sec 15,16,19,31 median of $514,276. With 274 homes in the subdivision, the property sits in the upper tier. 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
$583,539
Median
$514,276

This home is +13.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,499 across all districts. With a homestead exemption claimed, that drops to $9,141 — saving $1,358 per year. That's $762 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%$5,212
Round RockCity0.3720%$2,171
Williamson CountyCounty0.3694%$2,156
Austin Community Collegespecial0.1034%$603
Williamson County FM/RdCounty0.0443%$259
Upper Brushy Creek WCIDWater0.0170%$99
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$10,499

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $387,294 would pay approximately $2,417 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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