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510 PALM VALLEY BLVD E, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2,625 sqftBuilt 1976

Property at a Glance

This home is estimated between $640,417 and $1,159,011, with a best estimate of $676,087. 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

$640,417 $1,159,011
Best Estimate
$676,087
WCAD Value
$1,156,183
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 $640,417 and $1,159,011. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

514 PALM VALLEY BLVD E, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,714 sqft Built 1979
Raw Value $1,177,101
Adjusted Value $1,159,011

Adjusted -$19,342 for 89 sqft less living space and +$1,252 for being newer. Net adjustment: -$18,090.

504 PALM VALLEY BLVD E, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,328 sqft Built 1975
Raw Value $611,960
Adjusted Value $676,087

Adjusted +$64,544 for 297 sqft more living space and -$417 for being older. Net adjustment: +$64,127.

518 PALM VALLEY BLVD E, ROUND ROCK, TX 78664
0.00 mi 97% similar Same subdivision
3 bed 2 bath 1,920 sqft Built 1972
Raw Value $488,875
Adjusted Value $640,417

Adjusted +$153,211 for 705 sqft more living space and -$1,669 for being older. Net adjustment: +$151,542.

506 PALM VALLEY BLVD E, ROUND ROCK, TX 78664
0.00 mi 92% similar Same subdivision
3 bed 2 bath 1,764 sqft Built 1972
Raw Value $485,084
Adjusted Value $670,528

Adjusted +$187,113 for 861 sqft more living space and -$1,669 for being older. Net adjustment: +$185,444.

3 bed 2,636 sqft Built 1970
Raw Value $778,358
Adjusted Value $773,464

Adjusted -$2,391 for 11 sqft less living space and -$2,503 for being older. Net adjustment: -$4,894.

The Neighborhood

This home is valued 226.7% 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

outlier high
340 Properties
$353,946 Median Value
-4.4% YoY Change
6% Have Pool
87% Have Garage
This Home
$1,156,183
Median
$353,946

This home is +226.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $15,042 across all districts. With a homestead exemption claimed, that drops to $13,637 — saving $1,405 per year. That's $1,136 per month a buyer should budget. The assessed value increased +66.0% vs the subdivision average of -4.4%. This above-average increase gives a protest opportunity score of 100 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$7,466
Round RockCity0.3720%$3,110
Williamson CountyCounty0.3694%$3,089
Austin Community Collegespecial0.1034%$864
Williamson County FM/RdCounty0.0443%$371
Upper Brushy Creek WCIDWater0.0170%$142
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$15,042
100 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $676,087 would pay approximately $4,220 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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