12100 GREY ROCK LN, AUSTIN, TX 78750
AUSTIN, 78750 — williamson County
Property at a Glance
This home is estimated between $383,471 and $458,191, with a best estimate of $401,014. 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
$401,014
$445,298
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 $383,471 and $458,191. All 5 comparables are in the same subdivision, giving this estimate high confidence.
Comparable Properties (5)
Adjusted +$61,581 for 250 sqft more living space. Net adjustment: +$61,581.
Adjusted +$38,180 for 155 sqft more living space and -$9,982 for being older. Net adjustment: +$28,198.
Adjusted +$36,456 for 148 sqft more living space. Net adjustment: +$36,456.
Adjusted +$1,971 for 8 sqft more living space. Net adjustment: +$1,971.
Adjusted +$59,856 for 243 sqft more living space. Net adjustment: +$59,856.
The Neighborhood
This home is valued 14.9% above the R3P5480G - Anderson Mill 12,16 - 20 - Partially in TCAD median of $387,608. With 834 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 7.3% over the past year.
R3P5480G - Anderson Mill 12,16 - 20 - Partially in TCAD
typicalThis home is +14.9% above the subdivision median.
Tax Analysis
The estimated annual property tax is $9,243 across all districts. With a homestead exemption claimed, that drops to $7,443 — saving $1,800 per year. That's $620 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
| District | Type | Rate | Annual Amount |
|---|---|---|---|
| Round Rock ISD | School | 0.8931% | $3,977 |
| Austin | City | 0.5240% | $2,333 |
| Williamson County | County | 0.3694% | $1,645 |
| Anderson Mill Limited District | special | 0.1243% | $554 |
| Austin Community College | special | 0.1034% | $460 |
| Williamson County FM/Rd | County | 0.0443% | $197 |
| Upper Brushy Creek WCID | Water | 0.0170% | $76 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 2.0756% | $9,243 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $401,014 would pay approximately $2,503 per month (principal and interest only, excluding taxes and insurance).