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3506 CORNERSTONE, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,306 sqftBuilt 2019

Property at a Glance

This home is estimated between $170,747 and $404,469, with a best estimate of $358,236. 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

$170,747 $404,469
Best Estimate
$358,236
WCAD Value
$360,173
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $170,747 and $404,469. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

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 $404,469

Adjusted +$669 for 3 sqft more living space and +$56,233 for being newer. Net adjustment: +$56,902.

3609 CORNERSTONE, ROUND ROCK, TX 78681
0.00 mi 99% similar Same subdivision
3 bed 2 bath 1,269 sqft Built 1982
Raw Value $290,537
Adjusted Value $358,236

Adjusted +$8,252 for 37 sqft more living space and +$59,447 for being newer. Net adjustment: +$67,699.

3 bed 1,232 sqft Built 2011
Raw Value $141,391
Adjusted Value $170,747

Adjusted +$16,503 for 74 sqft more living space and +$12,853 for being newer. Net adjustment: +$29,356.

2901 MONUMENT DR, ROUND ROCK, TX 78681
0.00 mi 98% similar Same subdivision
3 bed 2 bath 1,212 sqft Built 1982
Raw Value $268,403
Adjusted Value $348,814

Adjusted +$20,964 for 94 sqft more living space and +$59,447 for being newer. Net adjustment: +$80,411.

4001 HILLSIDE DR, ROUND ROCK, TX 78681
0.00 mi 94% similar Same subdivision
3 bed 2 bath 1,133 sqft Built 1979
Raw Value $293,501
Adjusted Value $396,350

Adjusted +$38,582 for 173 sqft more living space and +$64,267 for being newer. Net adjustment: +$102,849.

The Neighborhood

This home is valued 21.5% above the R210480H - Brushy Creek median of $296,542. With 871 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 14.6% over the past year.

R210480H - Brushy Creek

above average
871 Properties
$296,542 Median Value
-14.6% YoY Change
2% Have Pool
94% Have Garage
This Home
$360,173
Median
$296,542

This home is +21.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,894 across all districts. With a homestead exemption claimed, that drops to $5,577 — saving $1,317 per year. That's $465 per month a buyer should budget. The assessed value increased +3.2% vs the subdivision average of -14.6%. This above-average increase gives a protest opportunity score of 50 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$3,217
Brushy Creek MUDMUD0.3868%$1,393
Williamson CountyCounty0.3694%$1,331
Austin Community Collegespecial0.1034%$372
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$360
Williamson County FM/RdCounty0.0443%$160
Upper Brushy Creek WCIDWater0.0170%$61
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$6,894
50 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $358,236 would pay approximately $2,236 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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