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428 CHISHOLM VALLEY DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,744 sqftBuilt 1977

Property at a Glance

This home is estimated between $282,951 and $599,096, with a best estimate of $373,137. That places the property below the R120X - Round Rock West Above 45 - Duplex median of $434,714, in a neighborhood that declined 1.8% over the past year.

Estimated Value Range

$282,951 $599,096
Best Estimate
$373,137
WCAD Value
$348,112
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R120X - Round Rock West Above 45 - Duplex. The estimated range of $282,951 and $599,096 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 1,810 sqft Built 1977
Raw Value $276,505
Adjusted Value $282,951

Adjusted -$13,420 for 66 sqft less living space and +$19,866 for having a garage. Net adjustment: +$6,446.

3 bed 2 bath 1,555 sqft Built 1977
Raw Value $334,708
Adjusted Value $373,137

Adjusted +$38,429 for 189 sqft more living space. Net adjustment: +$38,429.

3 bed 1,660 sqft Built 1978
Raw Value $271,885
Adjusted Value $286,460

Adjusted +$17,080 for 84 sqft more living space and -$2,505 for being older. Net adjustment: +$14,575.

3 bed 2 bath 2,030 sqft Built 1979
Raw Value $542,422
Adjusted Value $479,260

Adjusted -$58,152 for 286 sqft less living space and -$5,010 for being older. Net adjustment: -$63,162.

4 bed 2 bath 1,647 sqft Built 1976
Raw Value $576,868
Adjusted Value $599,096

Adjusted +$19,723 for 97 sqft more living space and +$2,505 for being newer. Net adjustment: +$22,228.

The Neighborhood

This home is valued 19.9% below the R120X - Round Rock West Above 45 - Duplex median of $434,714. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 1.8% over the past year.

R120X - Round Rock West Above 45 - Duplex

below average
295 Properties
$434,714 Median Value
-1.8% YoY Change
0% Have Pool
84% Have Garage
This Home
$348,112
Median
$434,714

This home is -19.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $6,263 across all districts. With a homestead exemption claimed, that drops to $4,949 — saving $1,314 per year. That's $412 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%$3,109
Round RockCity0.3720%$1,295
Williamson CountyCounty0.3694%$1,286
Austin Community Collegespecial0.1034%$360
Williamson County FM/RdCounty0.0443%$154
Upper Brushy Creek WCIDWater0.0170%$59
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,263

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $373,137 would pay approximately $2,329 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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