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8333 FATHOM CIR, AUSTIN, TX 78750

AUSTIN, 78750 — williamson County

5 bed5 bath1,660 sqftBuilt 1979

Property at a Glance

This home is estimated between $267,390 and $535,347, with a best estimate of $317,077. That places the property below the R371X - Round Rock West Below 45 - Duplex median of $419,343, in a neighborhood that declined 8.8% over the past year.

Estimated Value Range

$267,390 $535,347
Best Estimate
$317,077
WCAD Value
$586,051
High Confidence

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

Based on 5 comparable properties in R371X - Round Rock West Below 45 - Duplex, this home's estimated market value is between $267,390 and $535,347. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

8331 FATHOM CIR, AUSTIN, TX 78750
0.01 mi 100% similar Same subdivision
5 bed 4 bath 1,664 sqft Built 1977
Raw Value $438,156
Adjusted Value $445,580

Adjusted -$843 for 4 sqft less living space and +$8,267 for being newer. Net adjustment: +$7,424.

8335 FATHOM CIR, AUSTIN, TX 78750
0.01 mi 100% similar Same subdivision
5 bed 4 bath 1,560 sqft Built 1979
Raw Value $514,276
Adjusted Value $535,347

Adjusted +$21,071 for 100 sqft more living space. Net adjustment: +$21,071.

8325 FATHOM CIR, AUSTIN, TX 78750
0.05 mi 100% similar Same subdivision
4 bed 4 bath 2,236 sqft Built 1978
Raw Value $434,312
Adjusted Value $317,077

Adjusted -$121,368 for 576 sqft less living space and +$4,133 for being newer. Net adjustment: -$117,235.

8401 FATHOM CIR, AUSTIN, TX 78750
0.04 mi 98% similar Same subdivision
4 bed 3 bath 2,073 sqft Built 1976
Raw Value $342,012
Adjusted Value $267,390

Adjusted -$87,022 for 413 sqft less living space and +$12,400 for being newer. Net adjustment: -$74,622.

8327 FATHOM CIR, AUSTIN, TX 78750
0.04 mi 97% similar Same subdivision
4 bed 4 bath 2,472 sqft Built 1978
Raw Value $469,426
Adjusted Value $302,464

Adjusted -$171,095 for 812 sqft less living space and +$4,133 for being newer. Net adjustment: -$166,962.

The Neighborhood

This home is valued 39.8% above the R371X - Round Rock West Below 45 - Duplex median of $419,343. With 462 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.8% over the past year.

R371X - Round Rock West Below 45 - Duplex

above average
462 Properties
$419,343 Median Value
-8.8% YoY Change
0% Have Pool
94% Have Garage
This Home
$586,051
Median
$419,343

This home is +39.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,436 across all districts. With a homestead exemption claimed, that drops to $9,463 — saving $1,973 per year. That's $789 per month a buyer should budget. The assessed value increased -1.1% vs the subdivision average of -8.8%. This above-average increase gives a protest opportunity score of 39 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$5,234
AustinCity0.5240%$3,071
Williamson CountyCounty0.3694%$2,165
Austin Community Collegespecial0.1034%$606
Williamson County FM/RdCounty0.0443%$260
Upper Brushy Creek WCIDWater0.0170%$100
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$11,436
39 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $317,077 would pay approximately $1,979 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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