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3128 ALTON PL, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

6 bed4 bath1,889 sqftBuilt 2019

Property at a Glance

This home is estimated between $309,856 and $614,285, with a best estimate of $366,354. 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

$309,856 $614,285
Best Estimate
$366,354
WCAD Value
$884,293
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 $309,856 and $614,285 should be treated as a rough guide.

Comparable Properties (5)

5 bed 3 bath 1,677 sqft Built 2018
Raw Value $554,456
Adjusted Value $614,285

Adjusted +$56,308 for 212 sqft more living space and +$3,521 for being newer. Net adjustment: +$59,829.

4 bed 2 bath 1,898 sqft Built 2018
Raw Value $380,209
Adjusted Value $381,340

Adjusted -$2,390 for 9 sqft less living space and +$3,521 for being newer. Net adjustment: +$1,131.

4 bed 2 bath 1,962 sqft Built 2018
Raw Value $382,222
Adjusted Value $366,354

Adjusted -$19,389 for 73 sqft less living space and +$3,521 for being newer. Net adjustment: -$15,868.

3 bed 2,282 sqft Built 2020
Raw Value $417,760
Adjusted Value $309,856

Adjusted -$104,383 for 393 sqft less living space and -$3,521 for being older. Net adjustment: -$107,904.

3 bed 2 bath 1,960 sqft Built 2020
Raw Value $379,450
Adjusted Value $357,071

Adjusted -$18,858 for 71 sqft less living space and -$3,521 for being older. Net adjustment: -$22,379.

The Neighborhood

This home is valued 28.8% above the R500515C - FOREST GROVE median of $686,297. With 197 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 2.9% over the past year.

R500515C - FOREST GROVE

above average
197 Properties
$686,297 Median Value
-2.9% YoY Change
1% Have Pool
100% Have Garage
This Home
$884,293
Median
$686,297

This home is +28.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $15,911 across all districts. With a homestead exemption claimed, that drops to $14,497 — saving $1,414 per year. That's $1,208 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%$7,898
Round RockCity0.3720%$3,290
Williamson CountyCounty0.3694%$3,267
Austin Community Collegespecial0.1034%$914
Williamson County FM/RdCounty0.0443%$392
Upper Brushy Creek WCIDWater0.0170%$150
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$15,911

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $366,354 would pay approximately $2,287 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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