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9518 ANDERSON MILL RD, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed6,300 sqftBuilt 1980

Property at a Glance

This home is estimated between $-483,473 and $2,193,053, with a best estimate of $1,428,744.

Estimated Value Range

$-483,473 $2,193,053
Best Estimate
$1,428,744
WCAD Value
$1,751,562
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R45IM - MULTI-TENANT INDUSTRIAL FLEX BLDG IN RR RESEARCH/620. The estimated range of $-483,473 and $2,193,053 should be treated as a rough guide.

Comparable Properties (5)

3 bed 4,040 sqft Built 1978
Raw Value $1,154,467
Adjusted Value $1,699,952

Adjusted +$545,687 for 2,260 sqft more living space and -$202 for being older. Net adjustment: +$545,485.

3 bed 5,314 sqft Built 1950
Raw Value $1,193,704
Adjusted Value $1,428,744

Adjusted +$238,074 for 986 sqft more living space and -$3,034 for being older. Net adjustment: +$235,040.

3 bed 14,220 sqft Built 1977
Raw Value $1,429,150
Adjusted Value $-483,473

Adjusted -$1,912,320 for 7,920 sqft less living space and -$303 for being older. Net adjustment: -$1,912,623.

3 bed 2,231 sqft Built 1975
Raw Value $1,271,273
Adjusted Value $2,193,053

Adjusted +$982,479 for 4,069 sqft more living space and -$506 for being older and -$60,193 for no garage. Net adjustment: +$921,780.

3 bed 19,800 sqft Built 1985
Raw Value $3,785,939
Adjusted Value $526,808

Adjusted -$3,259,637 for 13,500 sqft less living space and +$506 for being newer. Net adjustment: -$3,259,131.

The Neighborhood

Subdivision comparison data is not available for this property.

Tax Analysis

The estimated annual property tax is $34,178 across all districts. With a homestead exemption claimed, that drops to $30,769 — saving $3,409 per year. That's $2,564 per month a buyer should budget. The assessed value increased +3.7%. This increase gives a protest opportunity score of 65 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$15,643
AustinCity0.5240%$9,178
Williamson CountyCounty0.3694%$6,471
Austin Community Collegespecial0.1034%$1,811
Williamson County FM/RdCounty0.0443%$776
Upper Brushy Creek WCIDWater0.0170%$298
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$34,178
65 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,428,744 would pay approximately $8,918 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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