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505 OAK DR W, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath2,461 sqftBuilt 2003

Property at a Glance

This home is estimated between $456,994 and $727,748, with a best estimate of $466,560. That places the property above the R462475H - Egger Acres median of $353,946, in a neighborhood that declined 4.4% over the past year.

Estimated Value Range

$456,994 $727,748
Best Estimate
$466,560
WCAD Value
$462,580
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in R462475H - Egger Acres. The estimated range of $456,994 and $727,748 should be treated as a rough guide.

Comparable Properties (5)

4 bed 2 bath 2,491 sqft Built 1998
Raw Value $465,898
Adjusted Value $457,292

Adjusted -$6,520 for 30 sqft less living space and -$2,086 for being older. Net adjustment: -$8,606.

4 bed 2 bath 2,326 sqft Built 1996
Raw Value $455,545
Adjusted Value $481,963

Adjusted +$29,338 for 135 sqft more living space and -$2,920 for being older. Net adjustment: +$26,418.

4 bed 3 bath 1,892 sqft Built 1995
Raw Value $607,430
Adjusted Value $727,748

Adjusted +$123,656 for 569 sqft more living space and -$3,338 for being older. Net adjustment: +$120,318.

3 bed 2 bath 2,039 sqft Built 2002
Raw Value $365,701
Adjusted Value $456,994

Adjusted +$91,710 for 422 sqft more living space and -$417 for being older. Net adjustment: +$91,293.

608 KAROLYN DR, ROUND ROCK, TX 78664
0.00 mi 89% similar Same subdivision
3 bed 2 bath 2,006 sqft Built 1975
Raw Value $379,361
Adjusted Value $466,560

Adjusted +$98,881 for 455 sqft more living space and -$11,682 for being older. Net adjustment: +$87,199.

The Neighborhood

This home is valued 30.7% above the R462475H - Egger Acres median of $353,946. With 340 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 4.4% over the past year.

R462475H - Egger Acres

above average
340 Properties
$353,946 Median Value
-4.4% YoY Change
6% Have Pool
87% Have Garage
This Home
$462,580
Median
$353,946

This home is +30.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $8,323 across all districts. With a homestead exemption claimed, that drops to $6,987 — saving $1,336 per year. That's $582 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%$4,131
Round RockCity0.3720%$1,721
Williamson CountyCounty0.3694%$1,709
Austin Community Collegespecial0.1034%$478
Williamson County FM/RdCounty0.0443%$205
Upper Brushy Creek WCIDWater0.0170%$79
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,323

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $466,560 would pay approximately $2,912 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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