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

3850 WALSH RANCH BLVD, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed168,685 sqftBuilt 2008

Property at a Glance

This home is estimated between $40,750,224 and $41,185,969, with a best estimate of $41,124,742.

Estimated Value Range

$40,750,224 $41,185,969
Best Estimate
$41,124,742
WCAD Value
$16,879,446
Low Confidence

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

There are 5 comparable properties within range, but none are in R30CS - Rr West School. The estimated range of $40,750,224 and $41,185,969 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 2,793 sqft Built 2008
Raw Value $1,129,547
Adjusted Value $41,124,742

Adjusted +$40,055,388 for 165,892 sqft more living space and -$60,193 for no garage. Net adjustment: +$39,995,195.

4 bed 3 bath 3,192 sqft Built 2009
Raw Value $913,640
Adjusted Value $40,812,596

Adjusted +$39,959,048 for 165,493 sqft more living space and +$101 for being newer and -$60,193 for no garage. Net adjustment: +$39,898,956.

4 bed 3 bath 2,917 sqft Built 2009
Raw Value $784,868
Adjusted Value $40,750,224

Adjusted +$40,025,448 for 165,768 sqft more living space and +$101 for being newer and -$60,193 for no garage. Net adjustment: +$39,965,356.

4 bed 4 bath 2,602 sqft Built 2009
Raw Value $1,102,933
Adjusted Value $41,144,347

Adjusted +$40,101,506 for 166,083 sqft more living space and +$101 for being newer and -$60,193 for no garage. Net adjustment: +$40,041,414.

4 bed 3 bath 2,569 sqft Built 2007
Raw Value $1,136,789
Adjusted Value $41,185,969

Adjusted +$40,109,474 for 166,116 sqft more living space and -$101 for being older and -$60,193 for no garage. Net adjustment: +$40,049,180.

The Neighborhood

Subdivision comparison data is not available for this property.

Tax Analysis

The estimated annual property tax is $257,796 across all districts. With a homestead exemption claimed, that drops to $253,427 — saving $4,369 per year. That's $21,119 per month a buyer should budget. The assessed value increased 0.0%. This increase gives a protest opportunity score of 50 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$150,750
Williamson CountyCounty0.3694%$62,361
Austin Community Collegespecial0.1034%$17,453
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$16,879
Williamson County FM/RdCounty0.0443%$7,482
Upper Brushy Creek WCIDWater0.0170%$2,870
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5273%$257,796
50 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $41,124,742 would pay approximately $256,699 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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