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8335 FATHOM CIR, AUSTIN, TX 78750

AUSTIN, 78750 — williamson County

5 bed4 bath1,560 sqftBuilt 1979

Property at a Glance

This home is estimated between $281,394 and $564,980, with a best estimate of $424,509. That places the property above 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

$281,394 $564,980
Best Estimate
$424,509
WCAD Value
$514,276
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 $281,394 and $564,980. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

8333 FATHOM CIR, AUSTIN, TX 78750
0.01 mi 100% similar Same subdivision
5 bed 5 bath 1,660 sqft Built 1979
Raw Value $586,051
Adjusted Value $564,980

Adjusted -$21,071 for 100 sqft less living space. Net adjustment: -$21,071.

8331 FATHOM CIR, AUSTIN, TX 78750
0.03 mi 100% similar Same subdivision
5 bed 4 bath 1,664 sqft Built 1977
Raw Value $438,156
Adjusted Value $424,509

Adjusted -$21,914 for 104 sqft less living space and +$8,267 for being newer. Net adjustment: -$13,647.

8329 FATHOM CIR, AUSTIN, TX 78750
0.04 mi 100% similar Same subdivision
6 bed 4 bath 1,092 sqft Built 1977
Raw Value $455,911
Adjusted Value $562,789

Adjusted +$98,611 for 468 sqft more living space and +$8,267 for being newer. Net adjustment: +$106,878.

8325 FATHOM CIR, AUSTIN, TX 78750
0.06 mi 100% similar Same subdivision
4 bed 4 bath 2,236 sqft Built 1978
Raw Value $434,312
Adjusted Value $296,007

Adjusted -$142,438 for 676 sqft less living space and +$4,133 for being newer. Net adjustment: -$138,305.

8327 FATHOM CIR, AUSTIN, TX 78750
0.05 mi 99% similar Same subdivision
4 bed 4 bath 2,472 sqft Built 1978
Raw Value $469,426
Adjusted Value $281,394

Adjusted -$192,165 for 912 sqft less living space and +$4,133 for being newer. Net adjustment: -$188,032.

The Neighborhood

This home is valued 22.6% 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
$514,276
Median
$419,343

This home is +22.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,035 across all districts. With a homestead exemption claimed, that drops to $8,151 — saving $1,884 per year. That's $679 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%$4,593
AustinCity0.5240%$2,695
Williamson CountyCounty0.3694%$1,900
Austin Community Collegespecial0.1034%$532
Williamson County FM/RdCounty0.0443%$228
Upper Brushy Creek WCIDWater0.0170%$87
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$10,035

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $424,509 would pay approximately $2,650 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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