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3901 SAM BASS RD, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed4,444 sqftBuilt 1977

Property at a Glance

This home is estimated between $510,008 and $2,205,911, with a best estimate of $1,554,042. That places the property above the R30PR - Single Family Conversion-west Round Rock median of $945,717, in a neighborhood that appreciated 6.7% over the past year.

Estimated Value Range

$510,008 $2,205,911
Best Estimate
$1,554,042
WCAD Value
$1,293,028
Low Confidence

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

There are 5 comparable properties within range, but none are in R30PR - Single Family Conversion-west Round Rock. The estimated range of $510,008 and $2,205,911 should be treated as a rough guide.

Comparable Properties (5)

3 bed 5,612 sqft Built 1985
Raw Value $791,218
Adjusted Value $510,008

Adjusted -$282,019 for 1,168 sqft less living space and +$809 for being newer. Net adjustment: -$281,210.

5 bed 4 bath 3,900 sqft Built 1968
Raw Value $2,135,663
Adjusted Value $2,205,911

Adjusted +$131,351 for 544 sqft more living space and -$910 for being older and -$60,193 for no garage. Net adjustment: +$70,248.

3 bed 2,958 sqft Built 1977
Raw Value $1,255,433
Adjusted Value $1,554,042

Adjusted +$358,802 for 1,486 sqft more living space and -$60,193 for no garage. Net adjustment: +$298,609.

3 bed 2 bath 2,884 sqft Built 1980
Raw Value $1,149,849
Adjusted Value $1,526,821

Adjusted +$376,669 for 1,560 sqft more living space and +$303 for being newer. Net adjustment: +$376,972.

3 bed 2 bath 2,103 sqft Built 1970
Raw Value $1,104,243
Adjusted Value $1,608,587

Adjusted +$565,245 for 2,341 sqft more living space and -$708 for being older and -$60,193 for no garage. Net adjustment: +$504,344.

The Neighborhood

This home is valued 36.7% above the R30PR - Single Family Conversion-west Round Rock median of $945,717. With 9 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 6.7% over the past year.

R30PR - Single Family Conversion-west Round Rock

above average
9 Properties
$945,717 Median Value
+6.7% YoY Change
0% Have Pool
33% Have Garage
This Home
$1,293,028
Median
$945,717

This home is +36.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $17,687 across all districts. With a homestead exemption claimed, that drops to $16,222 — saving $1,465 per year. That's $1,352 per month a buyer should budget. The assessed value increased +9.1% vs the subdivision average of +6.7%. This above-average increase gives a protest opportunity score of 37 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$10,343
Williamson CountyCounty0.3694%$4,278
Austin Community Collegespecial0.1034%$1,197
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$1,158
Williamson County FM/RdCounty0.0443%$513
Upper Brushy Creek WCIDWater0.0170%$197
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5273%$17,687
37 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,554,042 would pay approximately $9,700 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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