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605 HILLBROOK DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,499 sqftBuilt 1980

Property at a Glance

This home is estimated between $338,618 and $384,852, with a best estimate of $375,085. That places the property above the R210480H - Brushy Creek median of $296,542, in a neighborhood that declined 14.6% over the past year.

Estimated Value Range

$338,618 $384,852
Best Estimate
$375,085
WCAD Value
$279,980
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $338,618 and $384,852. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

3 bed 2 bath 1,626 sqft Built 1977
Raw Value $398,588
Adjusted Value $375,085

Adjusted -$28,323 for 127 sqft less living space and +$4,820 for being newer. Net adjustment: -$23,503.

3 bed 2 bath 1,550 sqft Built 1984
Raw Value $366,931
Adjusted Value $349,130

Adjusted -$11,374 for 51 sqft less living space and -$6,427 for being older. Net adjustment: -$17,801.

3609 CORNERSTONE, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,269 sqft Built 1982
Raw Value $290,537
Adjusted Value $338,618

Adjusted +$51,294 for 230 sqft more living space and -$3,213 for being older. Net adjustment: +$48,081.

3115 FREEMONT ST, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,303 sqft Built 1984
Raw Value $347,567
Adjusted Value $384,852

Adjusted +$43,712 for 196 sqft more living space and -$6,427 for being older. Net adjustment: +$37,285.

4001 HILLSIDE DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,133 sqft Built 1979
Raw Value $293,501
Adjusted Value $376,733

Adjusted +$81,625 for 366 sqft more living space and +$1,607 for being newer. Net adjustment: +$83,232.

The Neighborhood

This home is valued 5.6% below the R210480H - Brushy Creek median of $296,542. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 14.6% over the past year.

R210480H - Brushy Creek

typical
871 Properties
$296,542 Median Value
-14.6% YoY Change
2% Have Pool
94% Have Garage
This Home
$279,980
Median
$296,542

This home is -5.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,359 across all districts. With a homestead exemption claimed, that drops to $4,057 — saving $1,302 per year. That's $338 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%$2,501
Brushy Creek MUDMUD0.3868%$1,083
Williamson CountyCounty0.3694%$1,034
Austin Community Collegespecial0.1034%$289
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$280
Williamson County FM/RdCounty0.0443%$124
Upper Brushy Creek WCIDWater0.0170%$48
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$5,359

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $375,085 would pay approximately $2,341 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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