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

12402 TREE LINE DR, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

4 bed3 bath1,781 sqftBuilt 1981

Property at a Glance

This home is estimated between $326,767 and $390,581, with a best estimate of $375,239. 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

$326,767 $390,581
Best Estimate
$375,239
WCAD Value
$375,239
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 $326,767 and $390,581. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

12400 TREE LINE DR, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 3 bath 1,895 sqft Built 1982
Raw Value $388,979
Adjusted Value $360,825

Adjusted -$24,021 for 114 sqft less living space and -$4,133 for being older. Net adjustment: -$28,154.

12405 TREE LINE DR, AUSTIN, TX 78729
0.04 mi 100% similar Same subdivision
3 bed 4 bath 1,770 sqft Built 1981
Raw Value $377,447
Adjusted Value $379,765

Adjusted +$2,318 for 11 sqft more living space. Net adjustment: +$2,318.

12403 TREE LINE DR, AUSTIN, TX 78729
0.04 mi 100% similar Same subdivision
4 bed 4 bath 2,185 sqft Built 1981
Raw Value $411,893
Adjusted Value $326,767

Adjusted -$85,126 for 404 sqft less living space. Net adjustment: -$85,126.

12500 TREE LINE DR #A/B, AUSTIN, TX 78729
0.04 mi 100% similar Same subdivision
3 bed 2 bath 1,666 sqft Built 1981
Raw Value $366,350
Adjusted Value $390,581

Adjusted +$24,231 for 115 sqft more living space. Net adjustment: +$24,231.

12407 TREE LINE DR, AUSTIN, TX 78729
0.05 mi 100% similar Same subdivision
3 bed 4 bath 1,781 sqft Built 1981
Raw Value $375,239
Adjusted Value $375,239

This comparable closely matches the subject property's features.

The Neighborhood

This home is valued 10.5% 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
$375,239
Median
$419,343

This home is -10.5% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,322 across all districts. With a homestead exemption claimed, that drops to $5,609 — saving $1,713 per year. That's $467 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%$3,351
AustinCity0.5240%$1,966
Williamson CountyCounty0.3694%$1,386
Austin Community Collegespecial0.1034%$388
Williamson County FM/RdCounty0.0443%$166
Upper Brushy Creek WCIDWater0.0170%$64
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$7,322

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $375,239 would pay approximately $2,342 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