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512 SARA DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,790 sqftBuilt 1977

Property at a Glance

This home is estimated between $331,586 and $398,039, with a best estimate of $356,138. 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

$331,586 $398,039
Best Estimate
$356,138
WCAD Value
$390,730
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 $331,586 and $398,039. 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 $331,586

Adjusted -$46,941 for 216 sqft less living space and -$834 for being older. Net adjustment: -$47,775.

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 $356,138

Adjusted -$20,428 for 94 sqft less living space and -$2,920 for being older. Net adjustment: -$23,348.

3 bed 2 bath 1,830 sqft Built 1983
Raw Value $373,783
Adjusted Value $367,593

Adjusted -$8,693 for 40 sqft less living space and +$2,503 for being newer. Net adjustment: -$6,190.

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 $398,039

Adjusted +$74,541 for 343 sqft more living space and -$2,920 for being older. Net adjustment: +$71,621.

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 $345,742

Adjusted +$26,079 for 120 sqft more living space and +$417 for being newer. Net adjustment: +$26,496.

The Neighborhood

This home is valued 10.4% 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
$390,730
Median
$353,946

This home is +10.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,030 across all districts. With a homestead exemption claimed, that drops to $5,708 — saving $1,322 per year. That's $476 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%$3,490
Round RockCity0.3720%$1,454
Williamson CountyCounty0.3694%$1,444
Austin Community Collegespecial0.1034%$404
Williamson County FM/RdCounty0.0443%$173
Upper Brushy Creek WCIDWater0.0170%$66
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,030

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $356,138 would pay approximately $2,223 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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