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4225 CR 123, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed6 bath7,844 sqftBuilt 1995

Property at a Glance

This home is estimated between $2,154,695 and $2,537,237, with a best estimate of $2,301,168. That places the property above the H005D86H - Hutto Abstracts median of $644,778, in a neighborhood that appreciated 25.9% over the past year.

Estimated Value Range

$2,154,695 $2,537,237
Best Estimate
$2,301,168
WCAD Value
$3,098,426
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $2,154,695 and $2,537,237. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

4233 CR 123, ROUND ROCK, TX 78664
0.00 mi 90% similar Same subdivision
3 bed 5,635 sqft Built 2023
Raw Value $1,531,506
Adjusted Value $2,154,695

Adjusted +$697,111 for 2,209 sqft more living space and -$73,922 for being older. Net adjustment: +$623,189.

4356 CR 123, ROUND ROCK, TX 78664
0.00 mi 73% similar Same subdivision
3 bed 2,159 sqft Built 2021
Raw Value $585,415
Adjusted Value $2,310,832

Adjusted +$1,794,059 for 5,685 sqft more living space and -$68,642 for being older. Net adjustment: +$1,725,417.

3 bed 4 bath 1,931 sqft Built 1985
Raw Value $352,911
Adjusted Value $2,245,322

Adjusted +$1,866,010 for 5,913 sqft more living space and +$26,401 for being newer. Net adjustment: +$1,892,411.

4260 CR 123, ROUND ROCK, TX 78664
0.00 mi 68% similar Same subdivision
4 bed 2 bath 2,074 sqft Built 1977
Raw Value $571,739
Adjusted Value $2,537,237

Adjusted +$1,820,883 for 5,770 sqft more living space and +$47,521 for being newer and +$97,094 for having a garage. Net adjustment: +$1,965,498.

3 bed 2 bath 1,459 sqft Built 2000
Raw Value $299,405
Adjusted Value $2,301,168

Adjusted +$2,014,963 for 6,385 sqft more living space and -$13,200 for being older. Net adjustment: +$2,001,763.

The Neighborhood

This home is valued 380.5% above the H005D86H - Hutto Abstracts median of $644,778. With 1,074 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 25.9% over the past year.

H005D86H - Hutto Abstracts

outlier high
1,074 Properties
$644,778 Median Value
+25.9% YoY Change
3% Have Pool
35% Have Garage
This Home
$3,098,426
Median
$644,778

This home is +380.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $40,043 across all districts. With a homestead exemption claimed, that drops to $37,939 — saving $2,104 per year. That's $3,162 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%$27,162
Williamson CountyCounty0.3694%$8,326
Williamson County ESD #9 - Round RockESD0.0999%$2,252
Williamson County FM/RdCounty0.0443%$999
EWC Higher Ed Centerspecial0.0409%$921
Upper Brushy Creek WCIDWater0.0170%$383
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7768%$40,043

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $2,301,168 would pay approximately $14,364 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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