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3612 SANDY BROOK DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,730 sqftBuilt 2008

Property at a Glance

This home is estimated between $310,459 and $507,931, with a best estimate of $349,617. That places the property above the R409599G - STONEY BROOK - ALL SECTIONS median of $328,056, in a neighborhood that declined 4.7% over the past year.

Estimated Value Range

$310,459 $507,931
Best Estimate
$349,617
WCAD Value
$316,557
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 $310,459 and $507,931. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3616 SANDY BROOK DR, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,482 sqft Built 2009
Raw Value $288,083
Adjusted Value $349,617

Adjusted +$57,423 for 248 sqft more living space and +$4,111 for being newer. Net adjustment: +$61,534.

3608 SANDY BROOK DR, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,571 sqft Built 2006
Raw Value $281,866
Adjusted Value $310,459

Adjusted +$36,816 for 159 sqft more living space and -$8,223 for being older. Net adjustment: +$28,593.

3620 SANDY BROOK DR, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,717 sqft Built 2007
Raw Value $315,636
Adjusted Value $314,535

Adjusted +$3,010 for 13 sqft more living space and -$4,111 for being older. Net adjustment: -$1,101.

1527 HAYNIE BND, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
4 bed 2 bath 1,554 sqft Built 2008
Raw Value $379,144
Adjusted Value $419,896

Adjusted +$40,752 for 176 sqft more living space. Net adjustment: +$40,752.

3604 SANDY BROOK DR, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,050 sqft Built 2006
Raw Value $358,703
Adjusted Value $507,931

Adjusted +$157,451 for 680 sqft more living space and -$8,223 for being older. Net adjustment: +$149,228.

The Neighborhood

This home is valued 3.5% below the R409599G - STONEY BROOK - ALL SECTIONS median of $328,056. That positions it competitively for buyers comparing within the neighborhood. 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
$316,557
Median
$328,056

This home is -3.5% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,696 across all districts. With a homestead exemption claimed, that drops to $4,387 — saving $1,309 per year. That's $366 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%$2,827
Round RockCity0.3720%$1,178
Williamson CountyCounty0.3694%$1,170
Austin Community Collegespecial0.1034%$327
Williamson County FM/RdCounty0.0443%$140
Upper Brushy Creek WCIDWater0.0170%$54
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,696

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $349,617 would pay approximately $2,182 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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