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503 DENNIS DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

2 bed2 bath1,568 sqftBuilt 1975

Property at a Glance

This home is estimated between $284,174 and $350,628, with a best estimate of $298,331. 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

$284,174 $350,628
Best Estimate
$298,331
WCAD Value
$352,886
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 $284,174 and $350,628. 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 $284,174

Adjusted -$95,187 for 438 sqft less living space. Net adjustment: -$95,187.

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 $308,727

Adjusted -$68,673 for 316 sqft less living space and -$2,086 for being older. Net adjustment: -$70,759.

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 $350,628

Adjusted +$26,296 for 121 sqft more living space and -$2,086 for being older. Net adjustment: +$24,210.

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 $298,331

Adjusted -$22,167 for 102 sqft less living space and +$1,252 for being newer. Net adjustment: -$20,915.

3 bed 2 bath 1,392 sqft Built 1975
Raw Value $258,164
Adjusted Value $296,413

Adjusted +$38,249 for 176 sqft more living space. Net adjustment: +$38,249.

The Neighborhood

This home is in line with the R462475H - Egger Acres median of $353,946. 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
$352,886
Median
$353,946

This home is -0.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $6,349 across all districts. With a homestead exemption claimed, that drops to $5,034 — saving $1,315 per year. That's $420 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%$3,152
Round RockCity0.3720%$1,313
Williamson CountyCounty0.3694%$1,304
Austin Community Collegespecial0.1034%$365
Williamson County FM/RdCounty0.0443%$156
Upper Brushy Creek WCIDWater0.0170%$60
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,349

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $298,331 would pay approximately $1,862 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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