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3664 FOSSILWOOD WAY, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,776 sqftBuilt 2005

Property at a Glance

This home is estimated between $342,010 and $659,959, with a best estimate of $549,074. That places the property above the L498506D - VILLAGE AT MAYFIELD median of $510,992, in a neighborhood that declined 5.8% over the past year.

Estimated Value Range

$342,010 $659,959
Best Estimate
$549,074
WCAD Value
$393,543
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 $342,010 and $659,959. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3661 FOSSILWOOD WAY, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,152 sqft Built 2006
Raw Value $486,266
Adjusted Value $659,959

Adjusted +$173,964 for 624 sqft more living space and -$271 for being older. Net adjustment: +$173,693.

3724 FOSSILWOOD WAY, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,742 sqft Built 2006
Raw Value $533,634
Adjusted Value $542,842

Adjusted +$9,479 for 34 sqft more living space and -$271 for being older. Net adjustment: +$9,208.

3740 FOSSILWOOD WAY, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,041 sqft Built 2006
Raw Value $416,160
Adjusted Value $342,010

Adjusted -$73,879 for 265 sqft less living space and -$271 for being older. Net adjustment: -$74,150.

3768 FOSSILWOOD WAY, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,700 sqft Built 2005
Raw Value $527,886
Adjusted Value $549,074

Adjusted +$21,188 for 76 sqft more living space. Net adjustment: +$21,188.

3648 FOSSILWOOD WAY, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,694 sqft Built 2004
Raw Value $551,568
Adjusted Value $574,700

Adjusted +$22,861 for 82 sqft more living space and +$271 for being newer. Net adjustment: +$23,132.

The Neighborhood

This home is valued 23.0% 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

below average
696 Properties
$510,992 Median Value
-5.8% YoY Change
1% Have Pool
100% Have Garage
This Home
$393,543
Median
$510,992

This home is -23.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,081 across all districts. With a homestead exemption claimed, that drops to $5,758 — saving $1,323 per year. That's $480 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%$3,515
Round RockCity0.3720%$1,464
Williamson CountyCounty0.3694%$1,454
Austin Community Collegespecial0.1034%$407
Williamson County FM/RdCounty0.0443%$174
Upper Brushy Creek WCIDWater0.0170%$67
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,081

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $549,074 would pay approximately $3,427 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 4/19/2026.

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