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109 LEWIS ST, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

2 bed1 bath1,732 sqftBuilt 1960

Property at a Glance

This home is estimated between $370,511 and $696,949, with a best estimate of $560,993. 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

$370,511 $696,949
Best Estimate
$560,993
WCAD Value
$481,921
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 $370,511 and $696,949. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

107 ANDERSON AVE E, ROUND ROCK, TX 78664
0.00 mi 98% similar Same subdivision
2 bed 1 bath 999 sqft Built 1960
Raw Value $417,941
Adjusted Value $696,949

Adjusted +$188,206 for 733 sqft more living space and +$90,802 for having a pool. Net adjustment: +$279,008.

307 MILAM AVE E, ROUND ROCK, TX 78664
0.00 mi 91% similar Same subdivision
2 bed 1 bath 816 sqft Built 1955
Raw Value $200,679
Adjusted Value $542,136

Adjusted +$235,193 for 916 sqft more living space and +$15,462 for being newer and +$90,802 for having a pool. Net adjustment: +$341,457.

511 PECAN AVE, ROUND ROCK, TX 78664
0.00 mi 91% similar Same subdivision
2 bed 1 bath 890 sqft Built 1960
Raw Value $253,998
Adjusted Value $560,993

Adjusted +$216,193 for 842 sqft more living space and +$90,802 for having a pool. Net adjustment: +$306,995.

809 LIBERTY AVE E, ROUND ROCK, TX 78664
0.00 mi 84% similar Same subdivision
3 bed 2 bath 2,923 sqft Built 1962
Raw Value $716,116
Adjusted Value $370,511

Adjusted -$305,802 for 1,191 sqft less living space and -$6,185 for being older and +$90,802 for having a pool and -$124,420 for no garage. Net adjustment: -$345,605.

409 MILAM AVE, ROUND ROCK, TX 78664
0.00 mi 84% similar Same subdivision
2 bed 1 bath 576 sqft Built 1955
Raw Value $180,169
Adjusted Value $583,249

Adjusted +$296,816 for 1,156 sqft more living space and +$15,462 for being newer and +$90,802 for having a pool. Net adjustment: +$403,080.

The Neighborhood

This home is valued 51.0% 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

outlier high
360 Properties
$319,256 Median Value
+4.3% YoY Change
5% Have Pool
24% Have Garage
This Home
$481,921
Median
$319,256

This home is +51.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $8,671 across all districts. With a homestead exemption claimed, that drops to $7,332 — saving $1,339 per year. That's $611 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%$4,304
Round RockCity0.3720%$1,793
Williamson CountyCounty0.3694%$1,780
Austin Community Collegespecial0.1034%$498
Williamson County FM/RdCounty0.0443%$214
Upper Brushy Creek WCIDWater0.0170%$82
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,671

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $560,993 would pay approximately $3,502 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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