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1651 SAM BASS RD, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

5 bed4 bath3,900 sqftBuilt 1968

Property at a Glance

This home is estimated between $439,760 and $1,538,339, with a best estimate of $1,456,574. That places the property above the R30 - West Round Rock Vacant median of $104,382, in a neighborhood that declined 1.2% over the past year.

Estimated Value Range

$439,760 $1,538,339
Best Estimate
$1,456,574
WCAD Value
$2,135,663
Low Confidence

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

There are 5 comparable properties within range, but none are in R30 - West Round Rock Vacant. The estimated range of $439,760 and $1,538,339 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2,958 sqft Built 1977
Raw Value $1,255,433
Adjusted Value $1,483,793

Adjusted +$227,450 for 942 sqft more living space and +$910 for being newer. Net adjustment: +$228,360.

4 bed 4 bath 2,045 sqft Built 1982
Raw Value $412,475
Adjusted Value $861,789

Adjusted +$447,898 for 1,855 sqft more living space and +$1,416 for being newer. Net adjustment: +$449,314.

3 bed 2 bath 2,884 sqft Built 1980
Raw Value $1,149,849
Adjusted Value $1,456,574

Adjusted +$245,318 for 1,016 sqft more living space and +$1,214 for being newer and +$60,193 for having a garage. Net adjustment: +$306,725.

3 bed 5,612 sqft Built 1985
Raw Value $791,218
Adjusted Value $439,760

Adjusted -$413,370 for 1,712 sqft less living space and +$1,719 for being newer and +$60,193 for having a garage. Net adjustment: -$351,458.

3 bed 2 bath 2,103 sqft Built 1970
Raw Value $1,104,243
Adjusted Value $1,538,339

Adjusted +$433,894 for 1,797 sqft more living space and +$202 for being newer. Net adjustment: +$434,096.

The Neighborhood

This home is valued 1946.0% above the R30 - West Round Rock Vacant median of $104,382. With 74 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 1.2% over the past year.

R30 - West Round Rock Vacant

outlier high
74 Properties
$104,382 Median Value
-1.2% YoY Change
0% Have Pool
3% Have Garage
This Home
$2,135,663
Median
$104,382

This home is +1946.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $38,426 across all districts. With a homestead exemption claimed, that drops to $36,782 — saving $1,644 per year. That's $3,065 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%$19,074
Round RockCity0.3720%$7,945
Williamson CountyCounty0.3694%$7,890
Austin Community Collegespecial0.1034%$2,208
Williamson County FM/RdCounty0.0443%$947
Upper Brushy Creek WCIDWater0.0170%$363
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$38,426

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,456,574 would pay approximately $9,092 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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