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4209 CR 123, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

5 bed4 bath2,411 sqftBuilt 1975

Property at a Glance

This home is estimated between $349,807 and $769,903, with a best estimate of $542,700. That places the property below the H005D86H - Hutto Abstracts median of $644,778, in a neighborhood that appreciated 25.9% over the past year.

Estimated Value Range

$349,807 $769,903
Best Estimate
$542,700
WCAD Value
$392,172
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in H005D86H - Hutto Abstracts. The estimated range of $349,807 and $769,903 should be treated as a rough guide.

Comparable Properties (5)

4260 CR 123, ROUND ROCK, TX 78664
0.00 mi 99% similar Same subdivision
4 bed 2 bath 2,074 sqft Built 1977
Raw Value $571,739
Adjusted Value $769,903

Adjusted +$106,350 for 337 sqft more living space and -$5,280 for being older and +$97,094 for having a garage. Net adjustment: +$198,164.

4 bed 3 bath 2,514 sqft Built 1979
Raw Value $392,871
Adjusted Value $349,807

Adjusted -$32,504 for 103 sqft less living space and -$10,560 for being older. Net adjustment: -$43,064.

4 bed 3 bath 2,018 sqft Built 1972
Raw Value $410,758
Adjusted Value $542,700

Adjusted +$124,022 for 393 sqft more living space and +$7,920 for being newer. Net adjustment: +$131,942.

3 bed 4 bath 1,931 sqft Built 1985
Raw Value $352,911
Adjusted Value $477,987

Adjusted +$151,477 for 480 sqft more living space and -$26,401 for being older. Net adjustment: +$125,076.

4356 CR 123, ROUND ROCK, TX 78664
0.00 mi 82% similar Same subdivision
3 bed 2,159 sqft Built 2021
Raw Value $585,415
Adjusted Value $543,497

Adjusted +$79,526 for 252 sqft more living space and -$121,444 for being older. Net adjustment: -$41,918.

The Neighborhood

This home is valued 39.2% below the H005D86H - Hutto Abstracts median of $644,778. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 25.9% over the past year.

H005D86H - Hutto Abstracts

below average
1,074 Properties
$644,778 Median Value
+25.9% YoY Change
3% Have Pool
35% Have Garage
This Home
$392,172
Median
$644,778

This home is -39.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $6,968 across all districts. With a homestead exemption claimed, that drops to $5,208 — saving $1,760 per year. That's $434 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
Hutto ISDSchool1.2052%$4,726
Williamson CountyCounty0.3694%$1,449
Williamson County ESD #9 - Round RockESD0.0999%$392
Williamson County FM/RdCounty0.0443%$174
EWC Higher Ed Centerspecial0.0409%$160
Upper Brushy Creek WCIDWater0.0170%$67
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7768%$6,968

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $542,700 would pay approximately $3,388 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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