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3801 SPYGLASS CV, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath3,011 sqftBuilt 2004

Property at a Glance

This home is estimated between $558,995 and $840,997, with a best estimate of $810,854. 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

$558,995 $840,997
Best Estimate
$810,854
WCAD Value
$497,233
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 $558,995 and $840,997. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3804 SPYGLASS CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2,013 sqft Built 2004
Raw Value $525,320
Adjusted Value $810,854

Adjusted +$285,534 for 998 sqft more living space. Net adjustment: +$285,534.

3810 SPYGLASS CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 3,073 sqft Built 2005
Raw Value $578,699
Adjusted Value $558,995

Adjusted -$17,739 for 62 sqft less living space and -$1,965 for being older. Net adjustment: -$19,704.

3803 SPYGLASS CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,527 sqft Built 2003
Raw Value $491,158
Adjusted Value $631,598

Adjusted +$138,475 for 484 sqft more living space and +$1,965 for being newer. Net adjustment: +$140,440.

3809 SPYGLASS CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,146 sqft Built 2005
Raw Value $595,480
Adjusted Value $840,997

Adjusted +$247,482 for 865 sqft more living space and -$1,965 for being older. Net adjustment: +$245,517.

3803 PEBBLE CT, ROUND ROCK, TX 78664
0.06 mi 100% similar Same subdivision
4 bed 3 bath 2,047 sqft Built 2002
Raw Value $552,624
Adjusted Value $832,360

Adjusted +$275,806 for 964 sqft more living space and +$3,930 for being newer. Net adjustment: +$279,736.

The Neighborhood

This home is valued 3.3% 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
$497,233
Median
$514,276

This home is -3.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,947 across all districts. With a homestead exemption claimed, that drops to $7,604 — saving $1,343 per year. That's $634 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%$4,441
Round RockCity0.3720%$1,850
Williamson CountyCounty0.3694%$1,837
Austin Community Collegespecial0.1034%$514
Williamson County FM/RdCounty0.0443%$220
Upper Brushy Creek WCIDWater0.0170%$85
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,947

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $810,854 would pay approximately $5,061 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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