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

10806 OPAL TRL, AUSTIN, TX 78750

AUSTIN, 78750 — williamson County

3 bed2 bath1,840 sqftBuilt 1980

Property at a Glance

This home is estimated between $370,043 and $492,779, with a best estimate of $448,825. That places the property above the R353476G - Anderson Mill median of $407,368, in a neighborhood that appreciated 0.2% over the past year.

Estimated Value Range

$370,043 $492,779
Best Estimate
$448,825
WCAD Value
$470,620
High Confidence

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

Based on 5 comparable properties in R353476G - Anderson Mill, this home's estimated market value is between $370,043 and $492,779. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

10900 OPAL TRL, AUSTIN, TX 78750
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,680 sqft Built 1980
Raw Value $441,036
Adjusted Value $480,760

Adjusted +$39,724 for 160 sqft more living space. Net adjustment: +$39,724.

10804 OPAL TRL, AUSTIN, TX 78750
0.02 mi 100% similar Same subdivision
4 bed 2 bath 1,937 sqft Built 1980
Raw Value $436,630
Adjusted Value $374,327

Adjusted -$24,083 for 97 sqft less living space and -$38,220 for no pool. Net adjustment: -$62,303.

10901 OPAL TRL, AUSTIN, TX 78750
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,773 sqft Built 1980
Raw Value $432,191
Adjusted Value $448,825

Adjusted +$16,634 for 67 sqft more living space. Net adjustment: +$16,634.

10902 OPAL TRL, AUSTIN, TX 78750
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,000 sqft Built 1980
Raw Value $532,503
Adjusted Value $492,779

Adjusted -$39,724 for 160 sqft less living space. Net adjustment: -$39,724.

10805 OPAL TRL, AUSTIN, TX 78750
0.04 mi 100% similar Same subdivision
3 bed 2 bath 2,216 sqft Built 1980
Raw Value $463,394
Adjusted Value $370,043

Adjusted -$93,351 for 376 sqft less living space. Net adjustment: -$93,351.

The Neighborhood

This home is valued 15.5% above the R353476G - Anderson Mill median of $407,368. With 1,663 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 0.2% over the past year.

R353476G - Anderson Mill

above average
1,663 Properties
$407,368 Median Value
+0.2% YoY Change
3% Have Pool
95% Have Garage
This Home
$470,620
Median
$407,368

This home is +15.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,768 across all districts. With a homestead exemption claimed, that drops to $7,938 — saving $1,830 per year. That's $662 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%$4,203
AustinCity0.5240%$2,466
Williamson CountyCounty0.3694%$1,739
Anderson Mill Limited Districtspecial0.1243%$585
Austin Community Collegespecial0.1034%$487
Williamson County FM/RdCounty0.0443%$209
Upper Brushy Creek WCIDWater0.0170%$80
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0756%$9,768

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $448,825 would pay approximately $2,802 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