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

13126 GREYBULL TRL, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath1,433 sqftBuilt 1986

Property at a Glance

This home is estimated between $363,843 and $569,457, with a best estimate of $434,867. That places the property above the R3P3485G - Milwood Sec 22,23,26,27 - Partially in TCAD median of $424,102, in a neighborhood that declined 1.8% over the past year.

Estimated Value Range

$363,843 $569,457
Best Estimate
$434,867
WCAD Value
$403,053
High Confidence

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

Based on 5 comparable properties in R3P3485G - Milwood Sec 22,23,26,27 - Partially in TCAD, this home's estimated market value is between $363,843 and $569,457. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

13128 GREYBULL TRL, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,093 sqft Built 1986
Raw Value $434,407
Adjusted Value $569,457

Adjusted +$135,050 for 340 sqft more living space. Net adjustment: +$135,050.

13124 GREYBULL TRL, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,093 sqft Built 1986
Raw Value $406,984
Adjusted Value $542,034

Adjusted +$135,050 for 340 sqft more living space. Net adjustment: +$135,050.

13122 GREYBULL TRL, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,459 sqft Built 1986
Raw Value $401,074
Adjusted Value $390,747

Adjusted -$10,327 for 26 sqft less living space. Net adjustment: -$10,327.

13130 GREYBULL TRL, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,568 sqft Built 1986
Raw Value $417,466
Adjusted Value $363,843

Adjusted -$53,623 for 135 sqft less living space. Net adjustment: -$53,623.

13200 GREYBULL TRL, AUSTIN, TX 78729
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,308 sqft Built 1986
Raw Value $385,216
Adjusted Value $434,867

Adjusted +$49,651 for 125 sqft more living space. Net adjustment: +$49,651.

The Neighborhood

This home is valued 5.0% below the R3P3485G - Milwood Sec 22,23,26,27 - Partially in TCAD median of $424,102. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 1.8% over the past year.

R3P3485G - Milwood Sec 22,23,26,27 - Partially in TCAD

typical
541 Properties
$424,102 Median Value
-1.8% YoY Change
1% Have Pool
99% Have Garage
This Home
$403,053
Median
$424,102

This home is -5.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,028 across all districts. With a homestead exemption claimed, that drops to $5,704 — saving $1,324 per year. That's $475 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%$3,600
Williamson CountyCounty0.3694%$1,489
North Austin MUD #1MUD0.2165%$873
Austin Community Collegespecial0.1034%$417
Williamson County ESD #1 - Jollyville VFDESD0.1000%$403
Williamson County FM/RdCounty0.0443%$179
Upper Brushy Creek WCIDWater0.0170%$69
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7438%$7,028

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $434,867 would pay approximately $2,714 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