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8420 SEA ASH CIR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,519 sqftBuilt 1998

Property at a Glance

This home is estimated between $244,954 and $685,231, with a best estimate of $641,424. 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

$244,954 $685,231
Best Estimate
$641,424
WCAD Value
$480,467
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 $244,954 and $685,231. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

8422 SEA ASH CIR, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,400 sqft Built 1998
Raw Value $627,651
Adjusted Value $667,355

Adjusted +$39,704 for 119 sqft more living space. Net adjustment: +$39,704.

16805 WILLOW OAK LN, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,350 sqft Built 1999
Raw Value $586,133
Adjusted Value $641,424

Adjusted +$56,386 for 169 sqft more living space and -$1,095 for being older. Net adjustment: +$55,291.

16807 WILLOW OAK LN, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,182 sqft Built 1998
Raw Value $466,161
Adjusted Value $244,954

Adjusted -$221,207 for 663 sqft less living space. Net adjustment: -$221,207.

16803 WILLOW OAK LN, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,759 sqft Built 1999
Raw Value $526,765
Adjusted Value $445,595

Adjusted -$80,075 for 240 sqft less living space and -$1,095 for being older. Net adjustment: -$81,170.

8421 SEA ASH CIR, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,114 sqft Built 1998
Raw Value $550,105
Adjusted Value $685,231

Adjusted +$135,126 for 405 sqft more living space. Net adjustment: +$135,126.

The Neighborhood

This home is valued 8.1% below the R292598D - Stone Canyon - Weekley & Newmark median of $523,036. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 5.2% over the past year.

R292598D - Stone Canyon - Weekley & Newmark

typical
952 Properties
$523,036 Median Value
-5.2% YoY Change
1% Have Pool
99% Have Garage
This Home
$480,467
Median
$523,036

This home is -8.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,203 across all districts. With a homestead exemption claimed, that drops to $6,864 — saving $1,339 per year. That's $572 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%$4,291
Williamson CountyCounty0.3694%$1,775
Fern Bluff MUDMUD0.1800%$865
Austin Community Collegespecial0.1034%$497
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$480
Williamson County FM/RdCounty0.0443%$213
Upper Brushy Creek WCIDWater0.0170%$82
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7073%$8,203

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $641,424 would pay approximately $4,004 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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