Beta Williamson County, TX only — data and coverage are limited during early access.

409 HILLSIDE DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,471 sqftBuilt 1979

Property at a Glance

This home is estimated between $330,767 and $377,001, with a best estimate of $367,233. 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

$330,767 $377,001
Best Estimate
$367,233
WCAD Value
$282,224
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 $330,767 and $377,001. 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 $367,233

Adjusted -$34,568 for 155 sqft less living space and +$3,213 for being newer. Net adjustment: -$31,355.

3 bed 2 bath 1,550 sqft Built 1984
Raw Value $366,931
Adjusted Value $341,279

Adjusted -$17,619 for 79 sqft less living space and -$8,033 for being older. Net adjustment: -$25,652.

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 $330,767

Adjusted +$45,050 for 202 sqft more living space and -$4,820 for being older. Net adjustment: +$40,230.

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 $377,001

Adjusted +$37,467 for 168 sqft more living space and -$8,033 for being older. Net adjustment: +$29,434.

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 $368,882

Adjusted +$75,381 for 338 sqft more living space. Net adjustment: +$75,381.

The Neighborhood

This home is valued 4.8% 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
$282,224
Median
$296,542

This home is -4.8% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,402 across all districts. With a homestead exemption claimed, that drops to $4,100 — saving $1,302 per year. That's $342 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%$2,521
Brushy Creek MUDMUD0.3868%$1,092
Williamson CountyCounty0.3694%$1,043
Austin Community Collegespecial0.1034%$292
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$282
Williamson County FM/RdCounty0.0443%$125
Upper Brushy Creek WCIDWater0.0170%$48
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$5,402

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $367,233 would pay approximately $2,292 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.

View full property details