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12108 GREY ROCK LN, AUSTIN, TX 78750

AUSTIN, 78750 — williamson County

3 bed2 bath1,404 sqftBuilt 1977

Property at a Glance

This home is estimated between $288,100 and $381,414, with a best estimate of $330,540. That places the property below the R3P5480G - Anderson Mill 12,16 - 20 - Partially in TCAD median of $387,608, in a neighborhood that declined 7.3% over the past year.

Estimated Value Range

$288,100 $381,414
Best Estimate
$330,540
WCAD Value
$338,981
High Confidence

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

Based on 5 comparable properties in R3P5480G - Anderson Mill 12,16 - 20 - Partially in TCAD, this home's estimated market value is between $288,100 and $381,414. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

12106 GREY ROCK LN, AUSTIN, TX 78750
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,668 sqft Built 1977
Raw Value $446,443
Adjusted Value $381,414

Adjusted -$65,029 for 264 sqft less living space. Net adjustment: -$65,029.

12110 GREY ROCK LN, AUSTIN, TX 78750
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,505 sqft Built 1977
Raw Value $355,147
Adjusted Value $330,268

Adjusted -$24,879 for 101 sqft less living space. Net adjustment: -$24,879.

12104 GREY ROCK LN, AUSTIN, TX 78750
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,505 sqft Built 1977
Raw Value $355,419
Adjusted Value $330,540

Adjusted -$24,879 for 101 sqft less living space. Net adjustment: -$24,879.

12111 ACORN CREEK TRL, AUSTIN, TX 78750
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,425 sqft Built 1977
Raw Value $364,900
Adjusted Value $359,727

Adjusted -$5,173 for 21 sqft less living space. Net adjustment: -$5,173.

12112 GREY ROCK LN, AUSTIN, TX 78750
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,754 sqft Built 1977
Raw Value $374,313
Adjusted Value $288,100

Adjusted -$86,213 for 350 sqft less living space. Net adjustment: -$86,213.

The Neighborhood

This home is valued 12.5% below the R3P5480G - Anderson Mill 12,16 - 20 - Partially in TCAD median of $387,608. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 7.3% over the past year.

R3P5480G - Anderson Mill 12,16 - 20 - Partially in TCAD

typical
834 Properties
$387,608 Median Value
-7.3% YoY Change
2% Have Pool
97% Have Garage
This Home
$338,981
Median
$387,608

This home is -12.5% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,036 across all districts. With a homestead exemption claimed, that drops to $5,368 — saving $1,668 per year. That's $447 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%$3,027
AustinCity0.5240%$1,776
Williamson CountyCounty0.3694%$1,252
Anderson Mill Limited Districtspecial0.1243%$421
Austin Community Collegespecial0.1034%$351
Williamson County FM/RdCounty0.0443%$150
Upper Brushy Creek WCIDWater0.0170%$58
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0756%$7,036

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $330,540 would pay approximately $2,063 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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