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3805 SPYGLASS CV, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath2,072 sqftBuilt 2003

Property at a Glance

This home is estimated between $288,377 and $598,044, with a best estimate of $414,725. 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

$288,377 $598,044
Best Estimate
$414,725
WCAD Value
$441,787
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 $288,377 and $598,044. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3802 SPYGLASS CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,634 sqft Built 2004
Raw Value $474,694
Adjusted Value $598,044

Adjusted +$125,315 for 438 sqft more living space and -$1,965 for being older. Net adjustment: +$123,350.

3800 SPYGLASS CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,180 sqft Built 2004
Raw Value $447,589
Adjusted Value $414,725

Adjusted -$30,899 for 108 sqft less living space and -$1,965 for being older. Net adjustment: -$32,864.

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 $540,235

Adjusted +$16,880 for 59 sqft more living space and -$1,965 for being older. Net adjustment: +$14,915.

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 $288,377

Adjusted -$286,392 for 1,001 sqft less living space and -$3,930 for being older. Net adjustment: -$290,322.

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 $360,980

Adjusted -$130,178 for 455 sqft less living space. Net adjustment: -$130,178.

The Neighborhood

This home is valued 14.1% 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
$441,787
Median
$514,276

This home is -14.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,949 across all districts. With a homestead exemption claimed, that drops to $6,617 — saving $1,332 per year. That's $551 per month a buyer should budget. The assessed value increased -1.2% vs the subdivision average of -8.7%. This above-average increase gives a protest opportunity score of 38 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$3,946
Round RockCity0.3720%$1,643
Williamson CountyCounty0.3694%$1,632
Austin Community Collegespecial0.1034%$457
Williamson County FM/RdCounty0.0443%$196
Upper Brushy Creek WCIDWater0.0170%$75
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,949
38 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $414,725 would pay approximately $2,589 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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