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1405 MAIN ST, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed1 bath1,376 sqftBuilt 1960

Property at a Glance

This home is estimated between $290,174 and $633,512, with a best estimate of $424,289. 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

$290,174 $633,512
Best Estimate
$424,289
WCAD Value
$321,405
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $290,174 and $633,512. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

1409 MAIN ST, ROUND ROCK, TX 78664
0.00 mi 97% similar Same subdivision
3 bed 1 bath 1,280 sqft Built 1958
Raw Value $200,301
Adjusted Value $355,555

Adjusted +$24,649 for 96 sqft more living space and +$6,185 for being newer and +$124,420 for having a garage. Net adjustment: +$155,254.

111 STONE ST S, ROUND ROCK, TX 78664
0.01 mi 96% similar Same subdivision
3 bed 2 bath 1,330 sqft Built 1970
Raw Value $526,682
Adjusted Value $507,570

Adjusted +$11,811 for 46 sqft more living space and -$30,923 for being older. Net adjustment: -$19,112.

1304 MAIN ST, ROUND ROCK, TX 78664
0.00 mi 93% similar Same subdivision
2 bed 1 bath 1,059 sqft Built 1950
Raw Value $187,553
Adjusted Value $424,289

Adjusted +$81,393 for 317 sqft more living space and +$30,923 for being newer and +$124,420 for having a garage. Net adjustment: +$236,736.

1401 MAIN ST, ROUND ROCK, TX 78664
0.00 mi 92% similar Same subdivision
2 bed 1 bath 1,238 sqft Built 1955
Raw Value $239,279
Adjusted Value $290,174

Adjusted +$35,433 for 138 sqft more living space and +$15,462 for being newer. Net adjustment: +$50,895.

3 bed 1,483 sqft Built 1950
Raw Value $505,642
Adjusted Value $633,512

Adjusted -$27,473 for 107 sqft less living space and +$30,923 for being newer and +$124,420 for having a garage. Net adjustment: +$127,870.

The Neighborhood

This home is in line with the R701575F - OLD TOWN ROUND ROCK median of $319,256. 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
$321,405
Median
$319,256

This home is +0.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $4,015 across all districts. With a homestead exemption claimed, that drops to $2,724 — saving $1,291 per year. That's $227 per month a buyer should budget. The assessed value increased +29.1% vs the subdivision average of +4.3%. This above-average increase gives a protest opportunity score of 95 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$1,993
Round RockCity0.3720%$830
Williamson CountyCounty0.3694%$824
Austin Community Collegespecial0.1034%$231
Williamson County FM/RdCounty0.0443%$99
Upper Brushy Creek WCIDWater0.0170%$38
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$4,015
95 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $424,289 would pay approximately $2,648 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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