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

10701 ONYX CV, AUSTIN, TX 78750

AUSTIN, 78750 — williamson County

2 bed2 bath1,354 sqftBuilt 1980

Property at a Glance

This home is estimated between $332,606 and $431,792, with a best estimate of $387,039. 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

$332,606 $431,792
Best Estimate
$387,039
WCAD Value
$350,295
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 $332,606 and $431,792. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

11400 POWDER MILL TRL, AUSTIN, TX 78750
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,497 sqft Built 1979
Raw Value $463,419
Adjusted Value $431,792

Adjusted -$35,503 for 143 sqft less living space and +$3,876 for being newer. Net adjustment: -$31,627.

10405 FIRETHORN LN, AUSTIN, TX 78750
0.00 mi 100% similar Same subdivision
2 bed 2 bath 1,416 sqft Built 1975
Raw Value $365,075
Adjusted Value $369,063

Adjusted -$15,393 for 62 sqft less living space and +$19,381 for being newer. Net adjustment: +$3,988.

10501 DOERING LN, AUSTIN, TX 78750
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,570 sqft Built 1976
Raw Value $370,728
Adjusted Value $332,606

Adjusted -$53,627 for 216 sqft less living space and +$15,505 for being newer. Net adjustment: -$38,122.

11307 POWDER MILL TRL, AUSTIN, TX 78750
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,553 sqft Built 1979
Raw Value $465,243
Adjusted Value $419,712

Adjusted -$49,407 for 199 sqft less living space and +$3,876 for being newer. Net adjustment: -$45,531.

10408 FIRETHORN LN, AUSTIN, TX 78750
0.00 mi 100% similar Same subdivision
2 bed 2 bath 1,220 sqft Built 1974
Raw Value $330,512
Adjusted Value $387,039

Adjusted +$33,269 for 134 sqft more living space and +$23,258 for being newer. Net adjustment: +$56,527.

The Neighborhood

This home is valued 14.0% below the R353476G - Anderson Mill median of $407,368. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 0.2% over the past year.

R353476G - Anderson Mill

typical
1,663 Properties
$407,368 Median Value
+0.2% YoY Change
3% Have Pool
95% Have Garage
This Home
$350,295
Median
$407,368

This home is -14.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,271 across all districts. With a homestead exemption claimed, that drops to $5,589 — saving $1,682 per year. That's $466 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%$3,128
AustinCity0.5240%$1,836
Williamson CountyCounty0.3694%$1,294
Anderson Mill Limited Districtspecial0.1243%$436
Austin Community Collegespecial0.1034%$362
Williamson County FM/RdCounty0.0443%$155
Upper Brushy Creek WCIDWater0.0170%$60
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0756%$7,271

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $387,039 would pay approximately $2,416 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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