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421 CHISHOLM VALLEY DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,184 sqftBuilt 1974

Property at a Glance

This home is estimated between $142,230 and $283,125, with a best estimate of $241,996. That places the property below the R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN median of $281,358, in a neighborhood that declined 9.6% over the past year.

Estimated Value Range

$142,230 $283,125
Best Estimate
$241,996
WCAD Value
$266,343
High Confidence

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

Based on 5 comparable properties in R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN, this home's estimated market value is between $142,230 and $283,125. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

506 CHISHOLM VALLEY DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,336 sqft Built 1975
Raw Value $283,869
Adjusted Value $241,996

Adjusted -$32,788 for 152 sqft less living space and -$1,559 for being older and -$7,526 for no pool. Net adjustment: -$41,873.

707 CHISHOLM VALLEY DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,810 sqft Built 1977
Raw Value $276,505
Adjusted Value $142,230

Adjusted -$135,036 for 626 sqft less living space and -$4,677 for being older and +$5,438 for having a garage. Net adjustment: -$134,275.

524 CHISHOLM VALLEY DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,319 sqft Built 1976
Raw Value $277,968
Adjusted Value $245,729

Adjusted -$29,121 for 135 sqft less living space and -$3,118 for being older. Net adjustment: -$32,239.

711 CHISHOLM VALLEY DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,172 sqft Built 1977
Raw Value $285,213
Adjusted Value $283,125

Adjusted +$2,589 for 12 sqft more living space and -$4,677 for being older. Net adjustment: -$2,088.

801 CHISHOLM VALLEY DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,339 sqft Built 1977
Raw Value $279,568
Adjusted Value $241,456

Adjusted -$33,435 for 155 sqft less living space and -$4,677 for being older. Net adjustment: -$38,112.

The Neighborhood

This home is valued 5.3% below the R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN median of $281,358. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 9.6% over the past year.

R332479H - CHISHOLM VALLEY & NORTHRIDGE ACRES & WILLOW RUN

typical
1,006 Properties
$281,358 Median Value
-9.6% YoY Change
2% Have Pool
84% Have Garage
This Home
$266,343
Median
$281,358

This home is -5.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $4,792 across all districts. With a homestead exemption claimed, that drops to $3,493 — saving $1,299 per year. That's $291 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%$2,379
Round RockCity0.3720%$991
Williamson CountyCounty0.3694%$984
Austin Community Collegespecial0.1034%$275
Williamson County FM/RdCounty0.0443%$118
Upper Brushy Creek WCIDWater0.0170%$45
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$4,792

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $241,996 would pay approximately $1,511 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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