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3551 SAM BASS RD, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,408 sqftBuilt 2015

Property at a Glance

This home is estimated between $430,308 and $691,261, with a best estimate of $666,931. That places the property below the R202681C - Tonkawa & Oak Springs median of $851,894, in a neighborhood that appreciated 3.7% over the past year.

Estimated Value Range

$430,308 $691,261
Best Estimate
$666,931
WCAD Value
$1,062,049
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R202681C - Tonkawa & Oak Springs. The estimated range of $430,308 and $691,261 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 2,144 sqft Built 2016
Raw Value $582,790
Adjusted Value $666,931

Adjusted +$91,665 for 264 sqft more living space and -$7,524 for being older. Net adjustment: +$84,141.

4 bed 3 bath 2,205 sqft Built 2021
Raw Value $476,083
Adjusted Value $501,421

Adjusted +$70,485 for 203 sqft more living space and -$45,147 for being older. Net adjustment: +$25,338.

4 bed 3 bath 2,871 sqft Built 2015
Raw Value $591,070
Adjusted Value $430,308

Adjusted -$160,762 for 463 sqft less living space. Net adjustment: -$160,762.

4 bed 3 bath 2,023 sqft Built 2021
Raw Value $602,729
Adjusted Value $691,261

Adjusted +$133,679 for 385 sqft more living space and -$45,147 for being older. Net adjustment: +$88,532.

4 bed 3 bath 1,980 sqft Built 2020
Raw Value $576,417
Adjusted Value $687,404

Adjusted +$148,609 for 428 sqft more living space and -$37,622 for being older. Net adjustment: +$110,987.

The Neighborhood

This home is valued 24.7% above the R202681C - Tonkawa & Oak Springs median of $851,894. With 154 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 3.7% over the past year.

R202681C - Tonkawa & Oak Springs

above average
154 Properties
$851,894 Median Value
+3.7% YoY Change
7% Have Pool
92% Have Garage
This Home
$1,062,049
Median
$851,894

This home is +24.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $16,220 across all districts. With a homestead exemption claimed, that drops to $14,774 — saving $1,446 per year. That's $1,231 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%$9,485
Williamson CountyCounty0.3694%$3,924
Austin Community Collegespecial0.1034%$1,098
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$1,062
Williamson County FM/RdCounty0.0443%$471
Upper Brushy Creek WCIDWater0.0170%$181
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5273%$16,220

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $666,931 would pay approximately $4,163 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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