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12509 TREE LINE DR, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath1,486 sqftBuilt 1980

Property at a Glance

This home is estimated between $398,815 and $484,687, with a best estimate of $440,946. That places the property above the R373380F - Springwoods South of Anderson Mill median of $428,261, in a neighborhood that declined 1.5% over the past year.

Estimated Value Range

$398,815 $484,687
Best Estimate
$440,946
WCAD Value
$395,804
High Confidence

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

Based on 5 comparable properties in R373380F - Springwoods South of Anderson Mill, this home's estimated market value is between $398,815 and $484,687. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

12511 TREE LINE DR, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,410 sqft Built 1980
Raw Value $464,390
Adjusted Value $484,687

Adjusted +$20,297 for 76 sqft more living space. Net adjustment: +$20,297.

12507 TREE LINE DR, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,553 sqft Built 1980
Raw Value $416,709
Adjusted Value $398,815

Adjusted -$17,894 for 67 sqft less living space. Net adjustment: -$17,894.

12513 TREE LINE DR, AUSTIN, TX 78729
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,374 sqft Built 1980
Raw Value $392,952
Adjusted Value $422,864

Adjusted +$29,912 for 112 sqft more living space. Net adjustment: +$29,912.

8801 SPARKLING CREEK DR, AUSTIN, TX 78729
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,654 sqft Built 1980
Raw Value $514,169
Adjusted Value $469,301

Adjusted -$44,868 for 168 sqft less living space. Net adjustment: -$44,868.

8800 SPARKLING CREEK DR, AUSTIN, TX 78729
0.04 mi 100% similar Same subdivision
3 bed 2 bath 1,598 sqft Built 1982
Raw Value $447,967
Adjusted Value $440,946

Adjusted -$29,912 for 112 sqft less living space and +$22,891 for being newer. Net adjustment: -$7,021.

The Neighborhood

This home is valued 7.6% below the R373380F - Springwoods South of Anderson Mill median of $428,261. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 1.5% over the past year.

R373380F - Springwoods South of Anderson Mill

typical
81 Properties
$428,261 Median Value
-1.5% YoY Change
3% Have Pool
95% Have Garage
This Home
$395,804
Median
$428,261

This home is -7.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,723 across all districts. With a homestead exemption claimed, that drops to $5,985 — saving $1,738 per year. That's $499 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%$3,535
AustinCity0.5240%$2,074
Williamson CountyCounty0.3694%$1,462
Austin Community Collegespecial0.1034%$409
Williamson County FM/RdCounty0.0443%$175
Upper Brushy Creek WCIDWater0.0170%$67
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$7,723

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $440,946 would pay approximately $2,752 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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