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2421 SPARROW DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath2,085 sqftBuilt 1991

Property at a Glance

This home is estimated between $418,168 and $740,919, with a best estimate of $469,438. That places the property below the R280589F - Oakcreek Sec 1,2, and (AMD's) median of $502,867, in a neighborhood that declined 8.9% over the past year.

Estimated Value Range

$418,168 $740,919
Best Estimate
$469,438
WCAD Value
$423,673
High Confidence

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

Based on 5 comparable properties in R280589F - Oakcreek Sec 1,2, and (AMD's), this home's estimated market value is between $418,168 and $740,919. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

2409 SPARROW DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,348 sqft Built 1990
Raw Value $493,054
Adjusted Value $740,919

Adjusted +$245,756 for 737 sqft more living space and +$2,109 for being newer. Net adjustment: +$247,865.

2403 SPARROW DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,844 sqft Built 1992
Raw Value $391,184
Adjusted Value $469,438

Adjusted +$80,363 for 241 sqft more living space and -$2,109 for being older. Net adjustment: +$78,254.

2414 SPARROW DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,067 sqft Built 1989
Raw Value $422,314
Adjusted Value $432,533

Adjusted +$6,002 for 18 sqft more living space and +$4,217 for being newer. Net adjustment: +$10,219.

2418 SPARROW DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,840 sqft Built 1990
Raw Value $428,441
Adjusted Value $512,246

Adjusted +$81,696 for 245 sqft more living space and +$2,109 for being newer. Net adjustment: +$83,805.

2405 SPARROW DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,264 sqft Built 1989
Raw Value $473,639
Adjusted Value $418,168

Adjusted -$59,688 for 179 sqft less living space and +$4,217 for being newer. Net adjustment: -$55,471.

The Neighborhood

This home is valued 15.7% below the R280589F - Oakcreek Sec 1,2, and (AMD's) median of $502,867. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 8.9% over the past year.

R280589F - Oakcreek Sec 1,2, and (AMD's)

below average
787 Properties
$502,867 Median Value
-8.9% YoY Change
2% Have Pool
99% Have Garage
This Home
$423,673
Median
$502,867

This home is -15.7% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,623 across all districts. With a homestead exemption claimed, that drops to $6,294 — saving $1,329 per year. That's $525 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%$3,784
Round RockCity0.3720%$1,576
Williamson CountyCounty0.3694%$1,565
Austin Community Collegespecial0.1034%$438
Williamson County FM/RdCounty0.0443%$188
Upper Brushy Creek WCIDWater0.0170%$72
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,623

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $469,438 would pay approximately $2,930 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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