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505 SARA DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,683 sqftBuilt 1977

Property at a Glance

This home is estimated between $308,332 and $374,786, with a best estimate of $332,884. 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

$308,332 $374,786
Best Estimate
$332,884
WCAD Value
$381,069
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 $308,332 and $374,786. 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 $308,332

Adjusted -$70,195 for 323 sqft less living space and -$834 for being older. Net adjustment: -$71,029.

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 $332,884

Adjusted -$43,682 for 201 sqft less living space and -$2,920 for being older. Net adjustment: -$46,602.

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 $374,786

Adjusted +$51,288 for 236 sqft more living space and -$2,920 for being older. Net adjustment: +$48,368.

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 $322,488

Adjusted +$2,825 for 13 sqft more living space and +$417 for being newer. Net adjustment: +$3,242.

3 bed 2 bath 1,830 sqft Built 1983
Raw Value $373,783
Adjusted Value $344,340

Adjusted -$31,946 for 147 sqft less living space and +$2,503 for being newer. Net adjustment: -$29,443.

The Neighborhood

This home is valued 7.7% 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

typical
340 Properties
$353,946 Median Value
-4.4% YoY Change
6% Have Pool
87% Have Garage
This Home
$381,069
Median
$353,946

This home is +7.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,856 across all districts. With a homestead exemption claimed, that drops to $5,536 — saving $1,320 per year. That's $461 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%$3,403
Round RockCity0.3720%$1,418
Williamson CountyCounty0.3694%$1,408
Austin Community Collegespecial0.1034%$394
Williamson County FM/RdCounty0.0443%$169
Upper Brushy Creek WCIDWater0.0170%$65
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,856

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $332,884 would pay approximately $2,078 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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