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5105 AUTUMN SUNSET BLVD, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

2 bed2 bath1,040 sqftBuilt 2023

Property at a Glance

This home is estimated between $194,191 and $433,971, with a best estimate of $274,552. That places the property below the R450X - Round Rock East - Duplex median of $355,449, in a neighborhood that declined 8.7% over the past year.

Estimated Value Range

$194,191 $433,971
Best Estimate
$274,552
WCAD Value
$423,440
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $194,191 and $433,971. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

510 GREGORY CT, ROUND ROCK, TX 78664
0.08 mi 98% similar Same subdivision
2 bed 2 bath 1,228 sqft Built 1994
Raw Value $235,701
Adjusted Value $228,175

Adjusted -$36,531 for 188 sqft less living space and +$29,005 for being newer. Net adjustment: -$7,526.

3 bed 2 bath 1,130 sqft Built 1985
Raw Value $254,033
Adjusted Value $274,552

Adjusted -$17,488 for 90 sqft less living space and +$38,007 for being newer. Net adjustment: +$20,519.

517/518 WILLOWBEND CV, ROUND ROCK, TX 78664
0.08 mi 81% similar Same subdivision
5 bed 4 bath 994 sqft Built 1984
Raw Value $386,026
Adjusted Value $433,971

Adjusted +$8,938 for 46 sqft more living space and +$39,007 for being newer. Net adjustment: +$47,945.

3 bed 2 bath 1,296 sqft Built 1985
Raw Value $289,484
Adjusted Value $277,747

Adjusted -$49,744 for 256 sqft less living space and +$38,007 for being newer. Net adjustment: -$11,737.

517/519 GREGORY CT, ROUND ROCK, TX 78664
0.08 mi 77% similar Same subdivision
4 bed 2 bath 2,253 sqft Built 1994
Raw Value $400,887
Adjusted Value $194,191

Adjusted -$235,701 for 1,213 sqft less living space and +$29,005 for being newer. Net adjustment: -$206,696.

The Neighborhood

This home is valued 19.1% above the R450X - Round Rock East - Duplex median of $355,449. With 836 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.7% over the past year.

R450X - Round Rock East - Duplex

above average
836 Properties
$355,449 Median Value
-8.7% YoY Change
0% Have Pool
84% Have Garage
This Home
$423,440
Median
$355,449

This home is +19.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,848 across all districts. With a homestead exemption claimed, that drops to $6,299 — saving $1,549 per year. That's $525 per month a buyer should budget. The assessed value increased -2.1% vs the subdivision average of -8.7%. This above-average increase gives a protest opportunity score of 33 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Georgetown ISDSchool1.0506%$4,449
Round RockCity0.3720%$1,575
Williamson CountyCounty0.3694%$1,564
Williamson County FM/RdCounty0.0443%$188
Upper Brushy Creek WCIDWater0.0170%$72
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8534%$7,848
33 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $274,552 would pay approximately $1,714 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.

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