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

408 MAIN AVE E, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,473 sqftBuilt 1983

Property at a Glance

This home is estimated between $235,437 and $532,173, with a best estimate of $415,872. 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

$235,437 $532,173
Best Estimate
$415,872
WCAD Value
$434,038
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 $235,437 and $532,173. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

406 MAIN AVE E, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,334 sqft Built 1983
Raw Value $496,483
Adjusted Value $532,173

Adjusted +$35,690 for 139 sqft more living space. Net adjustment: +$35,690.

1406 MAIN AVE E, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,626 sqft Built 1982
Raw Value $283,003
Adjusted Value $371,231

Adjusted -$39,284 for 153 sqft less living space and +$3,092 for being newer and +$124,420 for having a garage. Net adjustment: +$88,228.

1402 MAIN AVE E, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,245 sqft Built 1976
Raw Value $246,051
Adjusted Value $235,437

Adjusted +$58,542 for 228 sqft more living space and +$21,646 for being newer and -$90,802 for no pool. Net adjustment: -$10,614.

1408 MAIN AVE E, ROUND ROCK, TX 78664
0.00 mi 97% similar Same subdivision
3 bed 1,044 sqft Built 1982
Raw Value $190,184
Adjusted Value $427,846

Adjusted +$110,150 for 429 sqft more living space and +$3,092 for being newer and +$124,420 for having a garage. Net adjustment: +$237,662.

707 MAIN AVE E, ROUND ROCK, TX 78664
0.00 mi 95% similar Same subdivision
2 bed 1,088 sqft Built 1984
Raw Value $320,111
Adjusted Value $415,872

Adjusted +$98,853 for 385 sqft more living space and -$3,092 for being older. Net adjustment: +$95,761.

The Neighborhood

This home is valued 36.0% 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
$434,038
Median
$319,256

This home is +36.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,810 across all districts. With a homestead exemption claimed, that drops to $6,479 — saving $1,331 per year. That's $540 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%$3,876
Round RockCity0.3720%$1,615
Williamson CountyCounty0.3694%$1,604
Austin Community Collegespecial0.1034%$449
Williamson County FM/RdCounty0.0443%$192
Upper Brushy Creek WCIDWater0.0170%$74
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,810

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $415,872 would pay approximately $2,596 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