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517 DENNIS DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed1 bath1,678 sqftBuilt 1975

Property at a Glance

This home is estimated between $308,080 and $374,533, with a best estimate of $332,632. 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

$308,080 $374,533
Best Estimate
$332,632
WCAD Value
$368,999
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 $308,080 and $374,533. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

3 bed 1 bath 1,667 sqft Built 1975
Raw Value $341,610
Adjusted Value $344,001

Adjusted +$2,391 for 11 sqft more living space. Net adjustment: +$2,391.

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 $308,080

Adjusted -$71,281 for 328 sqft less living space. Net adjustment: -$71,281.

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 $332,632

Adjusted -$44,768 for 206 sqft less living space and -$2,086 for being older. Net adjustment: -$46,854.

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 $374,533

Adjusted +$50,201 for 231 sqft more living space and -$2,086 for being older. Net adjustment: +$48,115.

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 $322,237

Adjusted +$1,739 for 8 sqft more living space and +$1,252 for being newer. Net adjustment: +$2,991.

The Neighborhood

This home is valued 4.3% 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

typical
340 Properties
$353,946 Median Value
-4.4% YoY Change
6% Have Pool
87% Have Garage
This Home
$368,999
Median
$353,946

This home is +4.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,639 across all districts. With a homestead exemption claimed, that drops to $5,321 — saving $1,318 per year. That's $443 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%$3,296
Round RockCity0.3720%$1,373
Williamson CountyCounty0.3694%$1,363
Austin Community Collegespecial0.1034%$382
Williamson County FM/RdCounty0.0443%$164
Upper Brushy Creek WCIDWater0.0170%$63
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,639

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $332,632 would pay approximately $2,076 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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