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

1505 MAIN AVE E, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,392 sqftBuilt 1999

Property at a Glance

This home is estimated between $139,697 and $436,432, with a best estimate of $332,107. 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

$139,697 $436,432
Best Estimate
$332,107
WCAD Value
$333,831
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 $139,697 and $436,432. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

408 MAIN AVE E, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,473 sqft Built 1983
Raw Value $434,038
Adjusted Value $338,297

Adjusted -$20,798 for 81 sqft less living space and +$49,477 for being newer and -$124,420 for no garage. Net adjustment: -$95,741.

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 $436,432

Adjusted +$14,892 for 58 sqft more living space and +$49,477 for being newer and -$124,420 for no garage. Net adjustment: -$60,051.

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 $275,491

Adjusted -$60,082 for 234 sqft less living space and +$52,570 for being newer. Net adjustment: -$7,512.

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 $139,697

Adjusted +$37,744 for 147 sqft more living space and +$71,124 for being newer and -$90,802 for no pool and -$124,420 for no garage. Net adjustment: -$106,354.

1408 MAIN AVE E, ROUND ROCK, TX 78664
0.00 mi 95% similar Same subdivision
3 bed 1,044 sqft Built 1982
Raw Value $190,184
Adjusted Value $332,107

Adjusted +$89,353 for 348 sqft more living space and +$52,570 for being newer. Net adjustment: +$141,923.

The Neighborhood

This home is valued 4.6% 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

typical
360 Properties
$319,256 Median Value
+4.3% YoY Change
5% Have Pool
24% Have Garage
This Home
$333,831
Median
$319,256

This home is +4.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $5,821 across all districts. With a homestead exemption claimed, that drops to $4,511 — saving $1,310 per year. That's $376 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%$2,889
Round RockCity0.3720%$1,204
Williamson CountyCounty0.3694%$1,195
Austin Community Collegespecial0.1034%$335
Williamson County FM/RdCounty0.0443%$143
Upper Brushy Creek WCIDWater0.0170%$55
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,821

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $332,107 would pay approximately $2,073 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