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4001 RIARDO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed4 bath2,880 sqftBuilt 2025

Property at a Glance

This home is estimated between $487,591 and $752,982, with a best estimate of $732,469. That places the property above the H123421C - SALERNO median of $416,826, in a neighborhood that appreciated 99.5% over the past year.

Estimated Value Range

$487,591 $752,982
Best Estimate
$732,469
WCAD Value
$495,291
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 $487,591 and $752,982. 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 $746,099

Adjusted +$173,581 for 605 sqft more living space and -$9,374 for being older. Net adjustment: +$164,207.

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 $487,591

Adjusted +$45,332 for 158 sqft more living space and -$9,374 for being older. Net adjustment: +$35,958.

3826 RIARDO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,275 sqft Built 2022
Raw Value $555,994
Adjusted Value $720,201

Adjusted +$173,581 for 605 sqft more living space and -$9,374 for being older. Net adjustment: +$164,207.

3908 RIARDO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,227 sqft Built 2022
Raw Value $575,003
Adjusted Value $752,982

Adjusted +$187,353 for 653 sqft more living space and -$9,374 for being older. Net adjustment: +$177,979.

4010 RIARDO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,289 sqft Built 2025
Raw Value $562,904
Adjusted Value $732,469

Adjusted +$169,565 for 591 sqft more living space. Net adjustment: +$169,565.

The Neighborhood

This home is valued 18.8% 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
$495,291
Median
$416,826

This home is +18.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,516 across all districts. With a homestead exemption claimed, that drops to $11,737 — saving $1,779 per year. That's $978 per month a buyer should budget. The assessed value increased +450.3% vs the subdivision average of +99.5%. This above-average increase gives a protest opportunity score of 100 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Hutto ISDSchool1.2052%$5,969
Round Rock MUD #1MUD0.6800%$3,368
Round RockCity0.3720%$1,842
Williamson CountyCounty0.3694%$1,830
Williamson County FM/RdCounty0.0443%$220
EWC Higher Ed Centerspecial0.0409%$202
Upper Brushy Creek WCIDWater0.0170%$84
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.7288%$13,516
100 / 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 $732,469 would pay approximately $4,572 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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