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12128 HARPSTER BND, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed3 bath1,355 sqftBuilt 2016

Property at a Glance

This home is estimated between $349,554 and $727,847, with a best estimate of $666,050. That places the property above the L591503E - AVERY RANCH FAR WEST PH 1 median of $483,591, in a neighborhood that declined 4.9% over the past year.

Estimated Value Range

$349,554 $727,847
Best Estimate
$666,050
WCAD Value
$526,019
High Confidence

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

Based on 5 comparable properties in L591503E - AVERY RANCH FAR WEST PH 1, this home's estimated market value is between $349,554 and $727,847. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

11901 HARPSTER BND, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,722 sqft Built 2016
Raw Value $601,905
Adjusted Value $450,078

Adjusted -$151,827 for 367 sqft less living space. Net adjustment: -$151,827.

12013 HARPSTER BND, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,254 sqft Built 2016
Raw Value $624,266
Adjusted Value $666,050

Adjusted +$41,784 for 101 sqft more living space. Net adjustment: +$41,784.

12132 HARPSTER BND, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,886 sqft Built 2016
Raw Value $569,228
Adjusted Value $349,554

Adjusted -$219,674 for 531 sqft less living space. Net adjustment: -$219,674.

12121 HARPSTER BND, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,155 sqft Built 2016
Raw Value $594,819
Adjusted Value $677,559

Adjusted +$82,740 for 200 sqft more living space. Net adjustment: +$82,740.

11504 HARPSTER BND, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,044 sqft Built 2012
Raw Value $589,498
Adjusted Value $727,847

Adjusted +$128,660 for 311 sqft more living space and +$9,689 for being newer. Net adjustment: +$138,349.

The Neighborhood

This home is valued 8.8% above the L591503E - AVERY RANCH FAR WEST PH 1 median of $483,591. With 1,612 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 4.9% over the past year.

L591503E - AVERY RANCH FAR WEST PH 1

typical
1,612 Properties
$483,591 Median Value
-4.9% YoY Change
0% Have Pool
100% Have Garage
This Home
$526,019
Median
$483,591

This home is +8.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,284 across all districts. With a homestead exemption claimed, that drops to $9,113 — saving $2,171 per year. That's $759 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
Leander ISDSchool1.0869%$5,717
AustinCity0.5240%$2,756
Williamson CountyCounty0.3694%$1,943
Austin Community Collegespecial0.1034%$544
Williamson County FM/RdCounty0.0443%$233
Upper Brushy Creek WCIDWater0.0170%$89
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.1451%$11,284

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $666,050 would pay approximately $4,157 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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