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

15900 KIAWAH ISLAND DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed3 bath2,325 sqftBuilt 2004

Property at a Glance

This home is estimated between $781,153 and $964,939, with a best estimate of $869,472. That places the property above the R250501D - AVERY RANCH EAST ALL SECTIONS PHASE 2 median of $798,474, in a neighborhood that declined 1.5% over the past year.

Estimated Value Range

$781,153 $964,939
Best Estimate
$869,472
WCAD Value
$863,386
High Confidence

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

Based on 5 comparable properties in R250501D - AVERY RANCH EAST ALL SECTIONS PHASE 2, this home's estimated market value is between $781,153 and $964,939. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15804 KIAWAH ISLAND DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,881 sqft Built 2003
Raw Value $712,787
Adjusted Value $869,472

Adjusted +$159,579 for 444 sqft more living space and -$2,894 for being older. Net adjustment: +$156,685.

10301 MEDINAH GREENS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 2,061 sqft Built 2003
Raw Value $872,948
Adjusted Value $964,939

Adjusted +$94,885 for 264 sqft more living space and -$2,894 for being older. Net adjustment: +$91,991.

15908 KIAWAH ISLAND DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,897 sqft Built 2002
Raw Value $774,400
Adjusted Value $922,439

Adjusted +$153,828 for 428 sqft more living space and -$5,789 for being older. Net adjustment: +$148,039.

15912 KIAWAH ISLAND DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 2,047 sqft Built 2002
Raw Value $736,554
Adjusted Value $830,681

Adjusted +$99,916 for 278 sqft more living space and -$5,789 for being older. Net adjustment: +$94,127.

10309 MEDINAH GREENS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 2,544 sqft Built 2002
Raw Value $865,653
Adjusted Value $781,153

Adjusted -$78,711 for 219 sqft less living space and -$5,789 for being older. Net adjustment: -$84,500.

The Neighborhood

This home is valued 8.1% above the R250501D - AVERY RANCH EAST ALL SECTIONS PHASE 2 median of $798,474. With 455 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 1.5% over the past year.

R250501D - AVERY RANCH EAST ALL SECTIONS PHASE 2

typical
455 Properties
$798,474 Median Value
-1.5% YoY Change
0% Have Pool
100% Have Garage
This Home
$863,386
Median
$798,474

This home is +8.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $16,847 across all districts. With a homestead exemption claimed, that drops to $14,533 — saving $2,314 per year. That's $1,211 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%$7,711
AustinCity0.5240%$4,524
Williamson CountyCounty0.3694%$3,190
Austin Community Collegespecial0.1034%$893
Williamson County FM/RdCounty0.0443%$383
Upper Brushy Creek WCIDWater0.0170%$147
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$16,847

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $869,472 would pay approximately $5,427 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