Beta Williamson County, TX only — data and coverage are limited during early access.

1502 SAM BASS RD, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed1 bath1,742 sqftBuilt 1940

Property at a Glance

This home is estimated between $138,758 and $794,362, with a best estimate of $399,393. That places the property above the R701575F - OLD TOWN ROUND ROCK median of $319,256, in a neighborhood that appreciated 4.3% over the past year.

Estimated Value Range

$138,758 $794,362
Best Estimate
$399,393
WCAD Value
$356,238
Low Confidence

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

There are 5 comparable properties within range, but none are in R701575F - OLD TOWN ROUND ROCK. The estimated range of $138,758 and $794,362 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 1,938 sqft Built 1971
Raw Value $670,001
Adjusted Value $399,393

Adjusted -$50,325 for 196 sqft less living space and -$95,863 for being older and -$124,420 for no garage. Net adjustment: -$270,608.

3 bed 2 bath 1,756 sqft Built 1980
Raw Value $868,751
Adjusted Value $741,462

Adjusted -$3,595 for 14 sqft less living space and -$123,694 for being older. Net adjustment: -$127,289.

3 bed 2 bath 2,103 sqft Built 1970
Raw Value $1,104,243
Adjusted Value $794,362

Adjusted -$92,691 for 361 sqft less living space and -$92,770 for being older and -$124,420 for no garage. Net adjustment: -$309,881.

3 bed 4 bath 1,744 sqft Built 1982
Raw Value $349,707
Adjusted Value $219,315

Adjusted -$514 for 2 sqft less living space and -$129,878 for being older. Net adjustment: -$130,392.

3 bed 4 bath 1,645 sqft Built 1982
Raw Value $368,150
Adjusted Value $138,758

Adjusted +$24,906 for 97 sqft more living space and -$129,878 for being older and -$124,420 for no garage. Net adjustment: -$229,392.

The Neighborhood

This home is valued 11.6% above the R701575F - OLD TOWN ROUND ROCK median of $319,256. With 360 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 4.3% over the past year.

R701575F - OLD TOWN ROUND ROCK

typical
360 Properties
$319,256 Median Value
+4.3% YoY Change
5% Have Pool
24% Have Garage
This Home
$356,238
Median
$319,256

This home is +11.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,410 across all districts. With a homestead exemption claimed, that drops to $5,094 — saving $1,316 per year. That's $425 per month a buyer should budget. The assessed value increased +15.5% vs the subdivision average of +4.3%. This above-average increase gives a protest opportunity score of 85 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$3,182
Round RockCity0.3720%$1,325
Williamson CountyCounty0.3694%$1,316
Austin Community Collegespecial0.1034%$368
Williamson County FM/RdCounty0.0443%$158
Upper Brushy Creek WCIDWater0.0170%$61
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$6,410
85 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $399,393 would pay approximately $2,493 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.

View full property details