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12006 GREY ROCK LN, AUSTIN, TX 78750

AUSTIN, 78750 — williamson County

3 bed2 bath1,498 sqftBuilt 1979

Property at a Glance

This home is estimated between $376,274 and $429,993, with a best estimate of $407,523. 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

$376,274 $429,993
Best Estimate
$407,523
WCAD Value
$355,273
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 $376,274 and $429,993. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

12100 GREY ROCK LN, AUSTIN, TX 78750
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,653 sqft Built 1977
Raw Value $445,298
Adjusted Value $417,100

Adjusted -$38,180 for 155 sqft less living space and +$9,982 for being newer. Net adjustment: -$28,198.

12004 GREY ROCK LN, AUSTIN, TX 78750
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,410 sqft Built 1977
Raw Value $344,616
Adjusted Value $376,274

Adjusted +$21,676 for 88 sqft more living space and +$9,982 for being newer. Net adjustment: +$31,658.

12102 GREY ROCK LN, AUSTIN, TX 78750
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,403 sqft Built 1977
Raw Value $396,610
Adjusted Value $429,993

Adjusted +$23,401 for 95 sqft more living space and +$9,982 for being newer. Net adjustment: +$33,383.

12101 ACORN CREEK TRL, AUSTIN, TX 78750
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,318 sqft Built 1977
Raw Value $353,203
Adjusted Value $407,523

Adjusted +$44,338 for 180 sqft more living space and +$9,982 for being newer. Net adjustment: +$54,320.

12013 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 $377,625

Adjusted +$17,982 for 73 sqft more living space and +$9,982 for being newer. Net adjustment: +$27,964.

The Neighborhood

This home is valued 8.3% 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
$355,273
Median
$387,608

This home is -8.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,374 across all districts. With a homestead exemption claimed, that drops to $5,686 — saving $1,688 per year. That's $474 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%$3,173
AustinCity0.5240%$1,862
Williamson CountyCounty0.3694%$1,313
Anderson Mill Limited Districtspecial0.1243%$442
Austin Community Collegespecial0.1034%$367
Williamson County FM/RdCounty0.0443%$157
Upper Brushy Creek WCIDWater0.0170%$60
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0756%$7,374

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $407,523 would pay approximately $2,544 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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