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12113 GREY ROCK LN, AUSTIN, TX 78750

AUSTIN, 78750 — williamson County

3 bed2 bath1,503 sqftBuilt 1977

Property at a Glance

This home is estimated between $312,486 and $385,800, with a best estimate of $364,862. 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

$312,486 $385,800
Best Estimate
$364,862
WCAD Value
$353,881
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 $312,486 and $385,800. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

12111 GREY ROCK LN, AUSTIN, TX 78750
0.01 mi 100% similar Same subdivision
2 bed 2 bath 1,476 sqft Built 1977
Raw Value $351,032
Adjusted Value $357,683

Adjusted +$6,651 for 27 sqft more living space. Net adjustment: +$6,651.

12115 GREY ROCK LN, AUSTIN, TX 78750
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,410 sqft Built 1977
Raw Value $341,954
Adjusted Value $364,862

Adjusted +$22,908 for 93 sqft more living space. Net adjustment: +$22,908.

12109 GREY ROCK LN, AUSTIN, TX 78750
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,549 sqft Built 1977
Raw Value $397,131
Adjusted Value $385,800

Adjusted -$11,331 for 46 sqft less living space. Net adjustment: -$11,331.

12117 GREY ROCK LN, AUSTIN, TX 78750
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,448 sqft Built 1977
Raw Value $353,105
Adjusted Value $366,653

Adjusted +$13,548 for 55 sqft more living space. Net adjustment: +$13,548.

12112 GREY ROCK LN, AUSTIN, TX 78750
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,754 sqft Built 1977
Raw Value $374,313
Adjusted Value $312,486

Adjusted -$61,827 for 251 sqft less living space. Net adjustment: -$61,827.

The Neighborhood

This home is valued 8.7% 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
$353,881
Median
$387,608

This home is -8.7% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,345 across all districts. With a homestead exemption claimed, that drops to $5,659 — saving $1,686 per year. That's $472 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%$3,161
AustinCity0.5240%$1,854
Williamson CountyCounty0.3694%$1,307
Anderson Mill Limited Districtspecial0.1243%$440
Austin Community Collegespecial0.1034%$366
Williamson County FM/RdCounty0.0443%$157
Upper Brushy Creek WCIDWater0.0170%$60
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0756%$7,345

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $364,862 would pay approximately $2,277 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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