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4100 SPANISH OAK DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed3 bath2,980 sqftBuilt 1976

Property at a Glance

This home is estimated between $535,995 and $1,258,169, with a best estimate of $782,140. That places the property above the R201578D - Great Oaks Sec 1, 1 (AMD), & 2 median of $714,415, in a neighborhood that declined 6.8% over the past year.

Estimated Value Range

$535,995 $1,258,169
Best Estimate
$782,140
WCAD Value
$904,628
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $535,995 and $1,258,169. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

4010 OAK MEADOW DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 4,108 sqft Built 1975
Raw Value $1,402,295
Adjusted Value $1,042,719

Adjusted -$349,409 for 1,128 sqft less living space and +$15,608 for being newer and -$25,775 for no garage. Net adjustment: -$359,576.

1913 OAK FOREST DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,573 sqft Built 1977
Raw Value $634,472
Adjusted Value $744,936

Adjusted +$126,072 for 407 sqft more living space and -$15,608 for being older. Net adjustment: +$110,464.

1808 OAK FOREST DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 3,357 sqft Built 1977
Raw Value $914,527
Adjusted Value $782,140

Adjusted -$116,779 for 377 sqft less living space and -$15,608 for being older. Net adjustment: -$132,387.

3607 OAK MEADOW DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 3,481 sqft Built 1977
Raw Value $1,454,741
Adjusted Value $1,258,169

Adjusted -$155,189 for 501 sqft less living space and -$15,608 for being older and -$25,775 for no garage. Net adjustment: -$196,572.

4 bed 3 bath 2,953 sqft Built 1983
Raw Value $662,662
Adjusted Value $535,995

Adjusted +$8,364 for 27 sqft more living space and -$109,256 for being older and -$25,775 for no garage. Net adjustment: -$126,667.

The Neighborhood

This home is valued 26.6% above the R201578D - Great Oaks Sec 1, 1 (AMD), & 2 median of $714,415. With 161 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 6.8% over the past year.

R201578D - Great Oaks Sec 1, 1 (AMD), & 2

above average
161 Properties
$714,415 Median Value
-6.8% YoY Change
5% Have Pool
74% Have Garage
This Home
$904,628
Median
$714,415

This home is +26.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,816 across all districts. With a homestead exemption claimed, that drops to $12,399 — saving $1,417 per year. That's $1,033 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%$8,079
Williamson CountyCounty0.3694%$3,342
Austin Community Collegespecial0.1034%$935
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$905
Williamson County FM/RdCounty0.0443%$401
Upper Brushy Creek WCIDWater0.0170%$154
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5273%$13,816

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $782,140 would pay approximately $4,882 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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