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12500 TREE LINE DR #A/B, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath1,666 sqftBuilt 1981

Property at a Glance

This home is estimated between $302,536 and $351,008, with a best estimate of $306,800. That places the property below the R371X - Round Rock West Below 45 - Duplex median of $419,343, in a neighborhood that declined 8.8% over the past year.

Estimated Value Range

$302,536 $351,008
Best Estimate
$306,800
WCAD Value
$366,350
High Confidence

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

Based on 5 comparable properties in R371X - Round Rock West Below 45 - Duplex, this home's estimated market value is between $302,536 and $351,008. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

12502 TREE LINE DR, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,781 sqft Built 1981
Raw Value $375,239
Adjusted Value $351,008

Adjusted -$24,231 for 115 sqft less living space. Net adjustment: -$24,231.

12406 TREE LINE DR, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 2,185 sqft Built 1981
Raw Value $411,893
Adjusted Value $302,536

Adjusted -$109,357 for 519 sqft less living space. Net adjustment: -$109,357.

12404 TREE LINE DR, AUSTIN, TX 78729
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,185 sqft Built 1981
Raw Value $411,893
Adjusted Value $302,536

Adjusted -$109,357 for 519 sqft less living space. Net adjustment: -$109,357.

12504 TREE LINE DR, AUSTIN, TX 78729
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,185 sqft Built 1981
Raw Value $416,157
Adjusted Value $306,800

Adjusted -$109,357 for 519 sqft less living space. Net adjustment: -$109,357.

12402 TREE LINE DR, AUSTIN, TX 78729
0.04 mi 100% similar Same subdivision
4 bed 3 bath 1,781 sqft Built 1981
Raw Value $375,239
Adjusted Value $351,008

Adjusted -$24,231 for 115 sqft less living space. Net adjustment: -$24,231.

The Neighborhood

This home is valued 12.6% below the R371X - Round Rock West Below 45 - Duplex median of $419,343. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 8.8% over the past year.

R371X - Round Rock West Below 45 - Duplex

typical
462 Properties
$419,343 Median Value
-8.8% YoY Change
0% Have Pool
94% Have Garage
This Home
$366,350
Median
$419,343

This home is -12.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,149 across all districts. With a homestead exemption claimed, that drops to $5,447 — saving $1,702 per year. That's $454 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%$3,272
AustinCity0.5240%$1,920
Williamson CountyCounty0.3694%$1,353
Austin Community Collegespecial0.1034%$379
Williamson County FM/RdCounty0.0443%$162
Upper Brushy Creek WCIDWater0.0170%$62
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$7,149

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $306,800 would pay approximately $1,915 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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