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405 FANNIN AVE, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

2 bed1 bath1,392 sqftBuilt 1955

Property at a Glance

This home is estimated between $416,460 and $627,806, with a best estimate of $491,850. 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

$416,460 $627,806
Best Estimate
$491,850
WCAD Value
$408,413
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 $416,460 and $627,806. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

511 PECAN AVE, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
2 bed 1 bath 890 sqft Built 1960
Raw Value $253,998
Adjusted Value $491,850

Adjusted +$128,894 for 502 sqft more living space and -$15,462 for being older and +$124,420 for having a garage. Net adjustment: +$237,852.

107 ANDERSON AVE E, ROUND ROCK, TX 78664
0.00 mi 95% similar Same subdivision
2 bed 1 bath 999 sqft Built 1960
Raw Value $417,941
Adjusted Value $627,806

Adjusted +$100,907 for 393 sqft more living space and -$15,462 for being older and +$124,420 for having a garage. Net adjustment: +$209,865.

307 MILAM AVE E, ROUND ROCK, TX 78664
0.00 mi 92% similar Same subdivision
2 bed 1 bath 816 sqft Built 1955
Raw Value $200,679
Adjusted Value $472,993

Adjusted +$147,894 for 576 sqft more living space and +$124,420 for having a garage. Net adjustment: +$272,314.

411 BELLVIEW AVE, ROUND ROCK, TX 78664
0.00 mi 91% similar Same subdivision
2 bed 1 bath 818 sqft Built 1975
Raw Value $206,506
Adjusted Value $416,460

Adjusted +$147,381 for 574 sqft more living space and -$61,847 for being older and +$124,420 for having a garage. Net adjustment: +$209,954.

409 MILAM AVE, ROUND ROCK, TX 78664
0.00 mi 85% similar Same subdivision
2 bed 1 bath 576 sqft Built 1955
Raw Value $180,169
Adjusted Value $514,106

Adjusted +$209,517 for 816 sqft more living space and +$124,420 for having a garage. Net adjustment: +$333,937.

The Neighborhood

This home is valued 27.9% 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
$408,413
Median
$319,256

This home is +27.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,348 across all districts. With a homestead exemption claimed, that drops to $6,023 — saving $1,325 per year. That's $502 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%$3,648
Round RockCity0.3720%$1,519
Williamson CountyCounty0.3694%$1,509
Austin Community Collegespecial0.1034%$422
Williamson County FM/RdCounty0.0443%$181
Upper Brushy Creek WCIDWater0.0170%$69
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,348

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $491,850 would pay approximately $3,070 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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