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

8501 SEA ASH CIR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath2,457 sqftBuilt 1998

Property at a Glance

This home is estimated between $426,114 and $1,014,262, with a best estimate of $757,148. That places the property above the R292598D - Stone Canyon - Weekley & Newmark median of $523,036, in a neighborhood that declined 5.2% over the past year.

Estimated Value Range

$426,114 $1,014,262
Best Estimate
$757,148
WCAD Value
$786,768
High Confidence

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

Based on 5 comparable properties in R292598D - Stone Canyon - Weekley & Newmark, this home's estimated market value is between $426,114 and $1,014,262. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

8503 SEA ASH CIR, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 3 bath 1,945 sqft Built 1999
Raw Value $675,080
Adjusted Value $844,811

Adjusted +$170,826 for 512 sqft more living space and -$1,095 for being older. Net adjustment: +$169,731.

8433 SEA ASH CIR, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
3 bed 2 bath 2,848 sqft Built 1998
Raw Value $572,237
Adjusted Value $441,782

Adjusted -$130,455 for 391 sqft less living space. Net adjustment: -$130,455.

8431 SEA ASH CIR, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 2 bath 2,816 sqft Built 1998
Raw Value $545,893
Adjusted Value $426,114

Adjusted -$119,779 for 359 sqft less living space. Net adjustment: -$119,779.

8505 SEA ASH CIR, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 3 bath 2,549 sqft Built 2000
Raw Value $790,034
Adjusted Value $757,148

Adjusted -$30,695 for 92 sqft less living space and -$2,191 for being older. Net adjustment: -$32,886.

8429 SEA ASH CIR, ROUND ROCK, TX 78681
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,452 sqft Built 1998
Raw Value $678,949
Adjusted Value $1,014,262

Adjusted +$335,313 for 1,005 sqft more living space. Net adjustment: +$335,313.

The Neighborhood

This home is valued 50.4% above the R292598D - Stone Canyon - Weekley & Newmark median of $523,036. With 952 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 5.2% over the past year.

R292598D - Stone Canyon - Weekley & Newmark

outlier high
952 Properties
$523,036 Median Value
-5.2% YoY Change
1% Have Pool
99% Have Garage
This Home
$786,768
Median
$523,036

This home is +50.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,432 across all districts. With a homestead exemption claimed, that drops to $12,037 — saving $1,395 per year. That's $1,003 per month a buyer should budget. The assessed value increased +4.2% vs the subdivision average of -5.2%. This above-average increase gives a protest opportunity score of 57 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$7,027
Williamson CountyCounty0.3694%$2,907
Fern Bluff MUDMUD0.1800%$1,416
Austin Community Collegespecial0.1034%$814
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$787
Williamson County FM/RdCounty0.0443%$349
Upper Brushy Creek WCIDWater0.0170%$134
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7073%$13,432
57 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $757,148 would pay approximately $4,726 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