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12112 GREY ROCK LN, AUSTIN, TX 78750

AUSTIN, 78750 — williamson County

3 bed2 bath1,754 sqftBuilt 1977

Property at a Glance

This home is estimated between $393,324 and $436,038, with a best estimate of $425,194. That places the property above 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

$393,324 $436,038
Best Estimate
$425,194
WCAD Value
$374,313
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 $393,324 and $436,038. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

12114 GREY ROCK LN, AUSTIN, TX 78750
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,668 sqft Built 1977
Raw Value $372,140
Adjusted Value $393,324

Adjusted +$21,184 for 86 sqft more living space. Net adjustment: +$21,184.

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 $416,481

Adjusted +$61,334 for 249 sqft more living space. Net adjustment: +$61,334.

12117 ACORN CREEK TRL, AUSTIN, TX 78750
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,505 sqft Built 1977
Raw Value $374,704
Adjusted Value $436,038

Adjusted +$61,334 for 249 sqft more living space. Net adjustment: +$61,334.

12115 ACORN CREEK TRL, AUSTIN, TX 78750
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,425 sqft Built 1977
Raw Value $349,661
Adjusted Value $430,701

Adjusted +$81,040 for 329 sqft more living space. Net adjustment: +$81,040.

12108 GREY ROCK LN, AUSTIN, TX 78750
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,404 sqft Built 1977
Raw Value $338,981
Adjusted Value $425,194

Adjusted +$86,213 for 350 sqft more living space. Net adjustment: +$86,213.

The Neighborhood

This home is valued 3.4% 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
$374,313
Median
$387,608

This home is -3.4% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,769 across all districts. With a homestead exemption claimed, that drops to $6,058 — saving $1,711 per year. That's $505 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%$3,343
AustinCity0.5240%$1,961
Williamson CountyCounty0.3694%$1,383
Anderson Mill Limited Districtspecial0.1243%$465
Austin Community Collegespecial0.1034%$387
Williamson County FM/RdCounty0.0443%$166
Upper Brushy Creek WCIDWater0.0170%$64
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0756%$7,769

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $425,194 would pay approximately $2,654 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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