Beta Williamson County, TX only — data and coverage are limited during early access.

404 ALTON CV, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed4 bath3,841 sqftBuilt 2017

Property at a Glance

This home is estimated between $829,835 and $1,208,173, with a best estimate of $972,541. That places the property below the R501615D - FOREST GROVES median of $977,717, in a neighborhood that appreciated 1.9% over the past year.

Estimated Value Range

$829,835 $1,208,173
Best Estimate
$972,541
WCAD Value
$1,093,327
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 $829,835 and $1,208,173. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

405 ALTON CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 3,435 sqft Built 2018
Raw Value $860,699
Adjusted Value $972,541

Adjusted +$111,842 for 406 sqft more living space. Net adjustment: +$111,842.

400 ALTON CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
5 bed 5 bath 3,190 sqft Built 2016
Raw Value $1,028,840
Adjusted Value $1,208,173

Adjusted +$179,333 for 651 sqft more living space. Net adjustment: +$179,333.

408 ALTON CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 4 bath 3,700 sqft Built 2017
Raw Value $903,293
Adjusted Value $942,135

Adjusted +$38,842 for 141 sqft more living space. Net adjustment: +$38,842.

4 bed 3 bath 2,131 sqft Built 2011
Raw Value $505,122
Adjusted Value $976,181

Adjusted +$471,059 for 1,710 sqft more living space. Net adjustment: +$471,059.

3 bed 2 bath 2,311 sqft Built 2017
Raw Value $408,361
Adjusted Value $829,835

Adjusted +$421,474 for 1,530 sqft more living space. Net adjustment: +$421,474.

The Neighborhood

This home is valued 11.8% above the R501615D - FOREST GROVES median of $977,717. With 29 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 1.9% over the past year.

R501615D - FOREST GROVES

typical
29 Properties
$977,717 Median Value
+1.9% YoY Change
0% Have Pool
100% Have Garage
This Home
$1,093,327
Median
$977,717

This home is +11.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $19,672 across all districts. With a homestead exemption claimed, that drops to $18,220 — saving $1,452 per year. That's $1,518 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%$9,765
Round RockCity0.3720%$4,067
Williamson CountyCounty0.3694%$4,039
Austin Community Collegespecial0.1034%$1,131
Williamson County FM/RdCounty0.0443%$485
Upper Brushy Creek WCIDWater0.0170%$186
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$19,672

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $972,541 would pay approximately $6,071 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.

View full property details