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9 VALLEY TRL, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,068 sqftBuilt 1998

Property at a Glance

This home is estimated between $226,343 and $390,298, with a best estimate of $353,503. That places the property below the R575583D - RR Rual Sub 122 & Gattis School Rd Area median of $734,399, in a neighborhood that appreciated 3.8% over the past year.

Estimated Value Range

$226,343 $390,298
Best Estimate
$353,503
WCAD Value
$557,749
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R575583D - RR Rual Sub 122 & Gattis School Rd Area. The estimated range of $226,343 and $390,298 should be treated as a rough guide.

Comparable Properties (5)

4 bed 2 bath 1,092 sqft Built 1999
Raw Value $350,883
Adjusted Value $343,172

Adjusted -$7,724 for 24 sqft less living space and +$13 for being newer. Net adjustment: -$7,711.

3 bed 2 bath 937 sqft Built 2002
Raw Value $311,293
Adjusted Value $353,503

Adjusted +$42,160 for 131 sqft more living space and +$50 for being newer. Net adjustment: +$42,210.

3 bed 2 bath 986 sqft Built 1984
Raw Value $335,358
Adjusted Value $361,572

Adjusted +$26,390 for 82 sqft more living space and -$176 for being older. Net adjustment: +$26,214.

3 bed 2 bath 1,193 sqft Built 1984
Raw Value $266,748
Adjusted Value $226,343

Adjusted -$40,229 for 125 sqft less living space and -$176 for being older. Net adjustment: -$40,405.

3 bed 2 bath 818 sqft Built 2002
Raw Value $309,789
Adjusted Value $390,298

Adjusted +$80,459 for 250 sqft more living space and +$50 for being newer. Net adjustment: +$80,509.

The Neighborhood

This home is valued 24.1% below the R575583D - RR Rual Sub 122 & Gattis School Rd Area median of $734,399. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 3.8% over the past year.

R575583D - RR Rual Sub 122 & Gattis School Rd Area

below average
213 Properties
$734,399 Median Value
+3.8% YoY Change
4% Have Pool
68% Have Garage
This Home
$557,749
Median
$734,399

This home is -24.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,401 across all districts. With a homestead exemption claimed, that drops to $7,049 — saving $1,352 per year. That's $587 per month a buyer should budget. The assessed value increased +21.7% vs the subdivision average of +3.8%. This above-average increase gives a protest opportunity score of 95 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$4,913
Williamson CountyCounty0.3694%$2,032
Austin Community Collegespecial0.1034%$569
Williamson County ESD #9 - Round RockESD0.0999%$550
Williamson County FM/RdCounty0.0443%$244
Upper Brushy Creek WCIDWater0.0170%$94
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$8,401
95 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $353,503 would pay approximately $2,207 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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