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3710 SANDY BROOK DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,050 sqftBuilt 2006

Property at a Glance

This home is estimated between $160,003 and $343,218, with a best estimate of $247,703. That places the property below the R409599G - STONEY BROOK - ALL SECTIONS median of $328,056, in a neighborhood that declined 4.7% over the past year.

Estimated Value Range

$160,003 $343,218
Best Estimate
$247,703
WCAD Value
$349,298
High Confidence

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

Based on 5 comparable properties in R409599G - STONEY BROOK - ALL SECTIONS, this home's estimated market value is between $160,003 and $343,218. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1588 HAYNIE BND, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
4 bed 2 bath 1,388 sqft Built 2006
Raw Value $354,452
Adjusted Value $276,189

Adjusted -$78,263 for 338 sqft less living space. Net adjustment: -$78,263.

1584 HAYNIE BND, ROUND ROCK, TX 78665
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,700 sqft Built 2006
Raw Value $310,508
Adjusted Value $160,003

Adjusted -$150,505 for 650 sqft less living space. Net adjustment: -$150,505.

1580 HAYNIE BND, ROUND ROCK, TX 78665
0.04 mi 100% similar Same subdivision
3 bed 2 bath 1,388 sqft Built 2006
Raw Value $325,966
Adjusted Value $247,703

Adjusted -$78,263 for 338 sqft less living space. Net adjustment: -$78,263.

1587 HAYNIE BND, ROUND ROCK, TX 78665
0.05 mi 100% similar Same subdivision
3 bed 2 bath 1,552 sqft Built 2006
Raw Value $289,574
Adjusted Value $173,338

Adjusted -$116,236 for 502 sqft less living space. Net adjustment: -$116,236.

1577 HAYNIE BND, ROUND ROCK, TX 78665
0.06 mi 100% similar Same subdivision
3 bed 2 bath 1,220 sqft Built 2007
Raw Value $378,470
Adjusted Value $343,218

Adjusted -$39,363 for 170 sqft less living space and +$4,111 for being newer. Net adjustment: -$35,252.

The Neighborhood

This home is valued 6.5% above the R409599G - STONEY BROOK - ALL SECTIONS median of $328,056. With 197 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 4.7% over the past year.

R409599G - STONEY BROOK - ALL SECTIONS

typical
197 Properties
$328,056 Median Value
-4.7% YoY Change
0% Have Pool
100% Have Garage
This Home
$349,298
Median
$328,056

This home is +6.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,285 across all districts. With a homestead exemption claimed, that drops to $4,970 — saving $1,315 per year. That's $414 per month a buyer should budget. The assessed value increased +1.7% vs the subdivision average of -4.7%. This above-average increase gives a protest opportunity score of 32 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$3,120
Round RockCity0.3720%$1,299
Williamson CountyCounty0.3694%$1,290
Austin Community Collegespecial0.1034%$361
Williamson County FM/RdCounty0.0443%$155
Upper Brushy Creek WCIDWater0.0170%$59
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,285
32 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $247,703 would pay approximately $1,546 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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