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

409 MILAM AVE, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

2 bed1 bath576 sqftBuilt 1955

Property at a Glance

This home is estimated between $44,239 and $293,869, with a best estimate of $139,056. That places the property below the R701575F - OLD TOWN ROUND ROCK median of $319,256, in a neighborhood that appreciated 4.3% over the past year.

Estimated Value Range

$44,239 $293,869
Best Estimate
$139,056
WCAD Value
$180,169
High Confidence

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

Based on 5 comparable properties in R701575F - OLD TOWN ROUND ROCK, this home's estimated market value is between $44,239 and $293,869. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

307 MILAM AVE E, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
2 bed 1 bath 816 sqft Built 1955
Raw Value $200,679
Adjusted Value $139,056

Adjusted -$61,623 for 240 sqft less living space. Net adjustment: -$61,623.

107 ANDERSON AVE E, ROUND ROCK, TX 78664
0.00 mi 94% similar Same subdivision
2 bed 1 bath 999 sqft Built 1960
Raw Value $417,941
Adjusted Value $293,869

Adjusted -$108,610 for 423 sqft less living space and -$15,462 for being older. Net adjustment: -$124,072.

511 PECAN AVE, ROUND ROCK, TX 78664
0.00 mi 90% similar Same subdivision
2 bed 1 bath 890 sqft Built 1960
Raw Value $253,998
Adjusted Value $157,913

Adjusted -$80,623 for 314 sqft less living space and -$15,462 for being older. Net adjustment: -$96,085.

411 BELLVIEW AVE, ROUND ROCK, TX 78664
0.00 mi 86% similar Same subdivision
2 bed 1 bath 818 sqft Built 1975
Raw Value $206,506
Adjusted Value $82,523

Adjusted -$62,136 for 242 sqft less living space and -$61,847 for being older. Net adjustment: -$123,983.

801 BAKER, ROUND ROCK, TX 78664
0.00 mi 85% similar Same subdivision
3 bed 2 bath 672 sqft Built 1980
Raw Value $236,998
Adjusted Value $44,239

Adjusted -$24,649 for 96 sqft less living space and -$77,308 for being older and -$90,802 for no pool. Net adjustment: -$192,759.

The Neighborhood

This home is valued 43.6% below the R701575F - OLD TOWN ROUND ROCK median of $319,256. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 4.3% over the past year.

R701575F - OLD TOWN ROUND ROCK

below average
360 Properties
$319,256 Median Value
+4.3% YoY Change
5% Have Pool
24% Have Garage
This Home
$180,169
Median
$319,256

This home is -43.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $3,242 across all districts. With a homestead exemption claimed, that drops to $1,958 — saving $1,284 per year. That's $163 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%$1,609
Round RockCity0.3720%$670
Williamson CountyCounty0.3694%$666
Austin Community Collegespecial0.1034%$186
Williamson County FM/RdCounty0.0443%$80
Upper Brushy Creek WCIDWater0.0170%$31
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$3,242

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $139,056 would pay approximately $868 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