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507 DENNIS DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

2 bed2 bath1,558 sqftBuilt 1975

Property at a Glance

This home is estimated between $285,855 and $352,309, with a best estimate of $300,012. That places the property below the R462475H - Egger Acres median of $353,946, in a neighborhood that declined 4.4% over the past year.

Estimated Value Range

$285,855 $352,309
Best Estimate
$300,012
WCAD Value
$338,942
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 $285,855 and $352,309. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

608 KAROLYN DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,006 sqft Built 1975
Raw Value $379,361
Adjusted Value $285,855

Adjusted -$97,360 for 448 sqft less living space and +$3,854 for having a pool. Net adjustment: -$93,506.

602 VIRGINIA DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,884 sqft Built 1970
Raw Value $379,486
Adjusted Value $310,407

Adjusted -$70,847 for 326 sqft less living space and -$2,086 for being older and +$3,854 for having a pool. Net adjustment: -$69,079.

516 VIRGINIA DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,447 sqft Built 1970
Raw Value $326,418
Adjusted Value $352,309

Adjusted +$24,123 for 111 sqft more living space and -$2,086 for being older and +$3,854 for having a pool. Net adjustment: +$25,891.

1703 GREYSON DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,670 sqft Built 1978
Raw Value $319,246
Adjusted Value $300,012

Adjusted -$24,340 for 112 sqft less living space and +$1,252 for being newer and +$3,854 for having a pool. Net adjustment: -$19,234.

3 bed 2 bath 1,392 sqft Built 1975
Raw Value $258,164
Adjusted Value $298,093

Adjusted +$36,075 for 166 sqft more living space and +$3,854 for having a pool. Net adjustment: +$39,929.

The Neighborhood

This home is valued 4.2% below the R462475H - Egger Acres median of $353,946. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 4.4% over the past year.

R462475H - Egger Acres

typical
340 Properties
$353,946 Median Value
-4.4% YoY Change
6% Have Pool
87% Have Garage
This Home
$338,942
Median
$353,946

This home is -4.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $6,099 across all districts. With a homestead exemption claimed, that drops to $4,786 — saving $1,313 per year. That's $399 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%$3,027
Round RockCity0.3720%$1,261
Williamson CountyCounty0.3694%$1,252
Austin Community Collegespecial0.1034%$350
Williamson County FM/RdCounty0.0443%$150
Upper Brushy Creek WCIDWater0.0170%$58
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,099

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $300,012 would pay approximately $1,873 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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