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3909 RIARDO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath2,218 sqftBuilt 2022

Property at a Glance

This home is estimated between $293,102 and $611,965, with a best estimate of $402,935. That places the property below the H123421C - SALERNO median of $416,826, in a neighborhood that appreciated 99.5% over the past year.

Estimated Value Range

$293,102 $611,965
Best Estimate
$402,935
WCAD Value
$573,436
High Confidence

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

Based on 5 comparable properties in H123421C - SALERNO, this home's estimated market value is between $293,102 and $611,965. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3834 RIARDO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,275 sqft Built 2022
Raw Value $581,892
Adjusted Value $565,538

Adjusted -$16,354 for 57 sqft less living space. Net adjustment: -$16,354.

4132 RIARDO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,896 sqft Built 2025
Raw Value $510,206
Adjusted Value $611,965

Adjusted +$92,385 for 322 sqft more living space and +$9,374 for being newer. Net adjustment: +$101,759.

3818 RIARDO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,468 sqft Built 2022
Raw Value $474,663
Adjusted Value $402,935

Adjusted -$71,728 for 250 sqft less living space. Net adjustment: -$71,728.

4030 RIARDO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,665 sqft Built 2025
Raw Value $125,066
Adjusted Value $293,102

Adjusted +$158,662 for 553 sqft more living space and +$9,374 for being newer. Net adjustment: +$168,036.

3916 RIARDO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,722 sqft Built 2022
Raw Value $451,633
Adjusted Value $307,030

Adjusted -$144,603 for 504 sqft less living space. Net adjustment: -$144,603.

The Neighborhood

This home is valued 37.6% above the H123421C - SALERNO median of $416,826. With 997 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 99.5% over the past year.

H123421C - SALERNO

above average
997 Properties
$416,826 Median Value
+99.5% YoY Change
0% Have Pool
100% Have Garage
This Home
$573,436
Median
$416,826

This home is +37.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $15,648 across all districts. With a homestead exemption claimed, that drops to $13,855 — saving $1,793 per year. That's $1,155 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
Hutto ISDSchool1.2052%$6,911
Round Rock MUD #1MUD0.6800%$3,899
Round RockCity0.3720%$2,133
Williamson CountyCounty0.3694%$2,119
Williamson County FM/RdCounty0.0443%$254
EWC Higher Ed Centerspecial0.0409%$234
Upper Brushy Creek WCIDWater0.0170%$97
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.7288%$15,648

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $402,935 would pay approximately $2,515 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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