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3121 ALTON PL, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath2,678 sqftBuilt 2019

Property at a Glance

This home is estimated between $483,174 and $701,589, with a best estimate of $580,583. That places the property below the R500515C - FOREST GROVE median of $686,297, in a neighborhood that declined 2.9% over the past year.

Estimated Value Range

$483,174 $701,589
Best Estimate
$580,583
WCAD Value
$615,465
Low Confidence

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

There are 5 comparable properties within range, but none are in R500515C - FOREST GROVE. The estimated range of $483,174 and $701,589 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 2,754 sqft Built 2017
Raw Value $619,037
Adjusted Value $605,894

Adjusted -$20,186 for 76 sqft less living space and +$7,043 for being newer. Net adjustment: -$13,143.

4 bed 3 bath 2,805 sqft Built 2022
Raw Value $527,470
Adjusted Value $483,174

Adjusted -$33,732 for 127 sqft less living space and -$10,564 for being older. Net adjustment: -$44,296.

4 bed 3 bath 2,828 sqft Built 2022
Raw Value $630,988
Adjusted Value $580,583

Adjusted -$39,841 for 150 sqft less living space and -$10,564 for being older. Net adjustment: -$50,405.

3 bed 2 bath 3,112 sqft Built 2018
Raw Value $813,340
Adjusted Value $701,589

Adjusted -$115,272 for 434 sqft less living space and +$3,521 for being newer. Net adjustment: -$111,751.

3 bed 2 bath 2,328 sqft Built 2017
Raw Value $470,578
Adjusted Value $570,583

Adjusted +$92,962 for 350 sqft more living space and +$7,043 for being newer. Net adjustment: +$100,005.

The Neighborhood

This home is valued 10.3% below the R500515C - FOREST GROVE median of $686,297. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 2.9% over the past year.

R500515C - FOREST GROVE

typical
197 Properties
$686,297 Median Value
-2.9% YoY Change
1% Have Pool
100% Have Garage
This Home
$615,465
Median
$686,297

This home is -10.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $11,074 across all districts. With a homestead exemption claimed, that drops to $9,710 — saving $1,364 per year. That's $809 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%$5,497
Round RockCity0.3720%$2,290
Williamson CountyCounty0.3694%$2,274
Austin Community Collegespecial0.1034%$636
Williamson County FM/RdCounty0.0443%$273
Upper Brushy Creek WCIDWater0.0170%$105
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$11,074

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $580,583 would pay approximately $3,624 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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