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512 AUSTIN AVE E, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

2 bed1 bath1,551 sqftBuilt 1960

Property at a Glance

This home is estimated between $387,456 and $576,949, with a best estimate of $420,500. That places the property above the R701575F - OLD TOWN ROUND ROCK median of $319,256, in a neighborhood that appreciated 4.3% over the past year.

Estimated Value Range

$387,456 $576,949
Best Estimate
$420,500
WCAD Value
$430,153
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 $387,456 and $576,949. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

605 AUSTIN AVE E, ROUND ROCK, TX 78664
0.00 mi 99% similar Same subdivision
2 bed 1 bath 2,034 sqft Built 1960
Raw Value $531,890
Adjusted Value $407,874

Adjusted -$124,016 for 483 sqft less living space. Net adjustment: -$124,016.

710 AUSTIN AVE E, ROUND ROCK, TX 78664
0.00 mi 95% similar Same subdivision
3 bed 1,460 sqft Built 1940
Raw Value $479,901
Adjusted Value $565,113

Adjusted +$23,365 for 91 sqft more living space and +$61,847 for being newer. Net adjustment: +$85,212.

606 E AUSTIN AVE, ROUND ROCK, TX 78664
0.00 mi 88% similar Same subdivision
2 bed 1 bath 1,131 sqft Built 1940
Raw Value $407,262
Adjusted Value $576,949

Adjusted +$107,840 for 420 sqft more living space and +$61,847 for being newer. Net adjustment: +$169,687.

608 AUSTIN AVE E, ROUND ROCK, TX 78664
0.00 mi 86% similar Same subdivision
3 bed 2 bath 1,248 sqft Built 1950
Raw Value $527,000
Adjusted Value $420,500

Adjusted +$77,799 for 303 sqft more living space and +$30,923 for being newer and -$90,802 for no pool and -$124,420 for no garage. Net adjustment: -$106,500.

1109 AUSTIN AVE E, ROUND ROCK, TX 78664
0.00 mi 86% similar Same subdivision
2 bed 1 bath 1,078 sqft Built 1979
Raw Value $324,762
Adjusted Value $387,456

Adjusted +$121,448 for 473 sqft more living space and -$58,754 for being older. Net adjustment: +$62,694.

The Neighborhood

This home is valued 34.7% above the R701575F - OLD TOWN ROUND ROCK median of $319,256. With 360 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 4.3% over the past year.

R701575F - OLD TOWN ROUND ROCK

above average
360 Properties
$319,256 Median Value
+4.3% YoY Change
5% Have Pool
24% Have Garage
This Home
$430,153
Median
$319,256

This home is +34.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,740 across all districts. With a homestead exemption claimed, that drops to $6,410 — saving $1,330 per year. That's $534 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%$3,842
Round RockCity0.3720%$1,600
Williamson CountyCounty0.3694%$1,589
Austin Community Collegespecial0.1034%$445
Williamson County FM/RdCounty0.0443%$191
Upper Brushy Creek WCIDWater0.0170%$73
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,740

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $420,500 would pay approximately $2,625 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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