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1705 ONION CREEK VLG, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed4 bath2,411 sqftBuilt 1979

Property at a Glance

This home is estimated between $379,621 and $503,021, with a best estimate of $453,480. 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

$379,621 $503,021
Best Estimate
$453,480
WCAD Value
$382,697
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 $379,621 and $503,021. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1701 ONION CREEK VIL, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 4 bath 2,411 sqft Built 1978
Raw Value $378,621
Adjusted Value $379,621

Adjusted +$1,000 for being newer. Net adjustment: +$1,000.

320/322 HIGHLAND ESTATES DR, ROUND ROCK, TX 78664
0.07 mi 100% similar Same subdivision
3 bed 2 bath 2,532 sqft Built 1984
Raw Value $481,993
Adjusted Value $453,480

Adjusted -$23,512 for 121 sqft less living space and -$5,001 for being older. Net adjustment: -$28,513.

308 HIGHLAND ESTATES DR, ROUND ROCK, TX 78664
0.07 mi 100% similar Same subdivision
4 bed 4 bath 2,943 sqft Built 1984
Raw Value $499,134
Adjusted Value $390,759

Adjusted -$103,374 for 532 sqft less living space and -$5,001 for being older. Net adjustment: -$108,375.

309/311 HIGHLAND ESTATES DR, ROUND ROCK, TX 78664
0.07 mi 99% similar Same subdivision
3 bed 2 bath 2,212 sqft Built 1984
Raw Value $451,714
Adjusted Value $485,381

Adjusted +$38,668 for 199 sqft more living space and -$5,001 for being older. Net adjustment: +$33,667.

313/315 HIGHLAND ESTATES DR, ROUND ROCK, TX 78664
0.07 mi 99% similar Same subdivision
3 bed 2 bath 2,212 sqft Built 1984
Raw Value $469,354
Adjusted Value $503,021

Adjusted +$38,668 for 199 sqft more living space and -$5,001 for being older. Net adjustment: +$33,667.

The Neighborhood

This home is valued 7.7% 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
$382,697
Median
$355,449

This home is +7.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,886 across all districts. With a homestead exemption claimed, that drops to $5,565 — saving $1,321 per year. That's $464 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%$3,418
Round RockCity0.3720%$1,424
Williamson CountyCounty0.3694%$1,414
Austin Community Collegespecial0.1034%$396
Williamson County FM/RdCounty0.0443%$170
Upper Brushy Creek WCIDWater0.0170%$65
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,886

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $453,480 would pay approximately $2,831 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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