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308 HIGHLAND ESTATES DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed4 bath2,943 sqftBuilt 1984

Property at a Glance

This home is estimated between $487,996 and $593,756, with a best estimate of $561,855. That places the property above the R450X - Round Rock East - Duplex median of $355,449, in a neighborhood that declined 8.7% over the past year.

Estimated Value Range

$487,996 $593,756
Best Estimate
$561,855
WCAD Value
$499,134
High Confidence

Based on 5 comparable properties(5 in the same subdivision)

Based on 5 comparable properties in R450X - Round Rock East - Duplex, this home's estimated market value is between $487,996 and $593,756. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1701 ONION CREEK VIL, ROUND ROCK, TX 78664
0.07 mi 100% similar Same subdivision
3 bed 4 bath 2,411 sqft Built 1978
Raw Value $378,621
Adjusted Value $487,996

Adjusted +$103,374 for 532 sqft more living space and +$6,001 for being newer. Net adjustment: +$109,375.

1705 ONION CREEK VLG, ROUND ROCK, TX 78664
0.07 mi 100% similar Same subdivision
4 bed 4 bath 2,411 sqft Built 1979
Raw Value $382,697
Adjusted Value $491,072

Adjusted +$103,374 for 532 sqft more living space and +$5,001 for being newer. Net adjustment: +$108,375.

320/322 HIGHLAND ESTATES DR, ROUND ROCK, TX 78664
0.00 mi 99% similar Same subdivision
3 bed 2 bath 2,532 sqft Built 1984
Raw Value $481,993
Adjusted Value $561,855

Adjusted +$79,862 for 411 sqft more living space. Net adjustment: +$79,862.

309/311 HIGHLAND ESTATES DR, ROUND ROCK, TX 78664
0.00 mi 95% similar Same subdivision
3 bed 2 bath 2,212 sqft Built 1984
Raw Value $451,714
Adjusted Value $593,756

Adjusted +$142,042 for 731 sqft more living space. Net adjustment: +$142,042.

305/307 HIGHLAND ESTATES DR, ROUND ROCK, TX 78664
0.00 mi 95% similar Same subdivision
3 bed 2 bath 2,212 sqft Built 1984
Raw Value $440,252
Adjusted Value $582,294

Adjusted +$142,042 for 731 sqft more living space. Net adjustment: +$142,042.

The Neighborhood

This home is valued 40.4% above the R450X - Round Rock East - Duplex median of $355,449. With 836 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.7% over the past year.

R450X - Round Rock East - Duplex

above average
836 Properties
$355,449 Median Value
-8.7% YoY Change
0% Have Pool
84% Have Garage
This Home
$499,134
Median
$355,449

This home is +40.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,623 across all districts. With a homestead exemption claimed, that drops to $6,280 — saving $1,343 per year. That's $523 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%$4,458
Williamson CountyCounty0.3694%$1,844
Austin Community Collegespecial0.1034%$516
Williamson County ESD #9 - Round RockESD0.0999%$499
Williamson County FM/RdCounty0.0443%$221
Upper Brushy Creek WCIDWater0.0170%$85
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$7,623

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $561,855 would pay approximately $3,507 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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