Beta Williamson County, TX only — data and coverage are limited during early access.

12603 GRISTMILL CV, AUSTIN, TX 78750

AUSTIN, 78750 — williamson County

4 bed2 bath1,121 sqftBuilt 1978

Property at a Glance

This home is estimated between $249,394 and $362,808, with a best estimate of $334,284. That places the property below the R353476G - Anderson Mill median of $407,368, in a neighborhood that appreciated 0.2% over the past year.

Estimated Value Range

$249,394 $362,808
Best Estimate
$334,284
WCAD Value
$479,296
High Confidence

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

Based on 5 comparable properties in R353476G - Anderson Mill, this home's estimated market value is between $249,394 and $362,808. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

12600 GRISTMILL CV, AUSTIN, TX 78750
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,469 sqft Built 1978
Raw Value $449,207
Adjusted Value $362,808

Adjusted -$86,399 for 348 sqft less living space. Net adjustment: -$86,399.

12501 GRISTMILL CV, AUSTIN, TX 78750
0.29 mi 100% similar Same subdivision
4 bed 2 bath 1,654 sqft Built 1978
Raw Value $451,872
Adjusted Value $319,542

Adjusted -$132,330 for 533 sqft less living space. Net adjustment: -$132,330.

12501 MOSSY BARK TRL, AUSTIN, TX 78750
0.29 mi 100% similar Same subdivision
4 bed 2 bath 1,557 sqft Built 1978
Raw Value $452,246
Adjusted Value $343,999

Adjusted -$108,247 for 436 sqft less living space. Net adjustment: -$108,247.

12500 MOSSY BARK TRL, AUSTIN, TX 78750
0.30 mi 100% similar Same subdivision
4 bed 2 bath 1,812 sqft Built 1978
Raw Value $420,951
Adjusted Value $249,394

Adjusted -$171,557 for 691 sqft less living space. Net adjustment: -$171,557.

12111 ROBIN RIDGE LN, AUSTIN, TX 78750
0.34 mi 100% similar Same subdivision
3 bed 2 bath 1,380 sqft Built 1976
Raw Value $390,834
Adjusted Value $334,284

Adjusted -$64,303 for 259 sqft less living space and +$7,753 for being newer. Net adjustment: -$56,550.

The Neighborhood

This home is valued 17.7% above the R353476G - Anderson Mill median of $407,368. With 1,663 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 0.2% over the past year.

R353476G - Anderson Mill

above average
1,663 Properties
$407,368 Median Value
+0.2% YoY Change
3% Have Pool
95% Have Garage
This Home
$479,296
Median
$407,368

This home is +17.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,948 across all districts. With a homestead exemption claimed, that drops to $8,107 — saving $1,841 per year. That's $676 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%$4,281
AustinCity0.5240%$2,512
Williamson CountyCounty0.3694%$1,771
Anderson Mill Limited Districtspecial0.1243%$596
Austin Community Collegespecial0.1034%$496
Williamson County FM/RdCounty0.0443%$212
Upper Brushy Creek WCIDWater0.0170%$81
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0756%$9,948

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $334,284 would pay approximately $2,087 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.

View full property details