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405 AUSTIN AVE E, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,488 sqftBuilt 1994

Property at a Glance

This home is estimated between $210,001 and $463,748, with a best estimate of $328,874. 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

$210,001 $463,748
Best Estimate
$328,874
WCAD Value
$370,917
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 $210,001 and $463,748. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

409 AUSTIN AVE E, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,877 sqft Built 2001
Raw Value $519,760
Adjusted Value $273,814

Adjusted -$99,880 for 389 sqft less living space and -$21,646 for being older and -$124,420 for no garage. Net adjustment: -$245,946.

1101 AUSTIN AVE E, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,338 sqft Built 1979
Raw Value $361,359
Adjusted Value $446,258

Adjusted +$38,514 for 150 sqft more living space and +$46,385 for being newer. Net adjustment: +$84,899.

303 AUSTIN AVE E, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,320 sqft Built 1991
Raw Value $282,008
Adjusted Value $210,001

Adjusted +$43,136 for 168 sqft more living space and +$9,277 for being newer and -$124,420 for no garage. Net adjustment: -$72,007.

305 E AUSTIN AVE, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,524 sqft Built 2008
Raw Value $505,830
Adjusted Value $328,874

Adjusted -$9,243 for 36 sqft less living space and -$43,293 for being older and -$124,420 for no garage. Net adjustment: -$176,956.

1105 AUSTIN AVE E, ROUND ROCK, TX 78664
0.00 mi 97% similar Same subdivision
3 bed 2 bath 1,078 sqft Built 1979
Raw Value $312,091
Adjusted Value $463,748

Adjusted +$105,272 for 410 sqft more living space and +$46,385 for being newer. Net adjustment: +$151,657.

The Neighborhood

This home is valued 16.2% 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
$370,917
Median
$319,256

This home is +16.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,674 across all districts. With a homestead exemption claimed, that drops to $5,355 — saving $1,319 per year. That's $446 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%$3,313
Round RockCity0.3720%$1,380
Williamson CountyCounty0.3694%$1,370
Austin Community Collegespecial0.1034%$384
Williamson County FM/RdCounty0.0443%$164
Upper Brushy Creek WCIDWater0.0170%$63
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,674

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $328,874 would pay approximately $2,053 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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