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405 PARKHILL CV, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed4 bath2,276 sqftBuilt 1984

Property at a Glance

This home is estimated between $411,183 and $648,324, with a best estimate of $416,859. 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

$411,183 $648,324
Best Estimate
$416,859
WCAD Value
$385,987
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 $411,183 and $648,324. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

414 PARKHILL CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 1,982 sqft Built 1984
Raw Value $360,151
Adjusted Value $417,279

Adjusted +$57,128 for 294 sqft more living space. Net adjustment: +$57,128.

417 PARKHILL CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 1,982 sqft Built 1984
Raw Value $359,731
Adjusted Value $416,859

Adjusted +$57,128 for 294 sqft more living space. Net adjustment: +$57,128.

402 PARKHILL CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 2,027 sqft Built 1984
Raw Value $362,799
Adjusted Value $411,183

Adjusted +$48,384 for 249 sqft more living space. Net adjustment: +$48,384.

406 PARKHILL CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 2,027 sqft Built 1984
Raw Value $362,799
Adjusted Value $411,183

Adjusted +$48,384 for 249 sqft more living space. Net adjustment: +$48,384.

409 PARKHILL CV, ROUND ROCK, TX 78664
0.00 mi 93% similar Same subdivision
4 bed 4 bath 872 sqft Built 1984
Raw Value $375,509
Adjusted Value $648,324

Adjusted +$272,815 for 1,404 sqft more living space. Net adjustment: +$272,815.

The Neighborhood

This home is valued 8.6% 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

typical
836 Properties
$355,449 Median Value
-8.7% YoY Change
0% Have Pool
84% Have Garage
This Home
$385,987
Median
$355,449

This home is +8.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,945 across all districts. With a homestead exemption claimed, that drops to $5,623 — saving $1,322 per year. That's $469 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%$3,447
Round RockCity0.3720%$1,436
Williamson CountyCounty0.3694%$1,426
Austin Community Collegespecial0.1034%$399
Williamson County FM/RdCounty0.0443%$171
Upper Brushy Creek WCIDWater0.0170%$66
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,945

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $416,859 would pay approximately $2,602 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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