Beta Williamson County, TX only — data and coverage are limited during early access.

4047 NUSCO WAY, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath1,311 sqftBuilt 2025

Property at a Glance

This home is estimated between $231,397 and $482,050, with a best estimate of $435,860. 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

$231,397 $482,050
Best Estimate
$435,860
WCAD Value
$227,208
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 $231,397 and $482,050. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

4900 GRAGNANO DR, ROUND ROCK, TX 78665
0.07 mi 100% similar Same subdivision
4 bed 3 bath 1,311 sqft Built 2025
Raw Value $435,860
Adjusted Value $435,860

This comparable closely matches the subject property's features.

4844 GRAGNANO DR, ROUND ROCK, TX 78665
0.07 mi 100% similar Same subdivision
3 bed 2 bath 1,713 sqft Built 2025
Raw Value $346,735
Adjusted Value $231,397

Adjusted -$115,338 for 402 sqft less living space. Net adjustment: -$115,338.

4836 GRAGNANO DR, ROUND ROCK, TX 78665
0.07 mi 100% similar Same subdivision
3 bed 2 bath 920 sqft Built 2025
Raw Value $369,868
Adjusted Value $482,050

Adjusted +$112,182 for 391 sqft more living space. Net adjustment: +$112,182.

4816 GRAGNANO DR, ROUND ROCK, TX 78665
0.07 mi 100% similar Same subdivision
4 bed 2 bath 1,080 sqft Built 2025
Raw Value $396,318
Adjusted Value $462,594

Adjusted +$66,276 for 231 sqft more living space. Net adjustment: +$66,276.

4904 GRAGNANO DR, ROUND ROCK, TX 78665
0.07 mi 100% similar Same subdivision
4 bed 2 bath 1,291 sqft Built 2025
Raw Value $381,799
Adjusted Value $387,537

Adjusted +$5,738 for 20 sqft more living space. Net adjustment: +$5,738.

The Neighborhood

This home is valued 45.5% below the H123421C - SALERNO median of $416,826. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 99.5% over the past year.

H123421C - SALERNO

below average
997 Properties
$416,826 Median Value
+99.5% YoY Change
0% Have Pool
100% Have Garage
This Home
$227,208
Median
$416,826

This home is -45.5% below the subdivision median.

Tax Analysis

The estimated annual property tax is $6,200 across all districts. With a homestead exemption claimed, that drops to $4,471 — saving $1,729 per year. That's $373 per month a buyer should budget. The assessed value increased +152.5% 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%$2,738
Round Rock MUD #1MUD0.6800%$1,545
Round RockCity0.3720%$845
Williamson CountyCounty0.3694%$839
Williamson County FM/RdCounty0.0443%$101
EWC Higher Ed Centerspecial0.0409%$93
Upper Brushy Creek WCIDWater0.0170%$39
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.7288%$6,200
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 $435,860 would pay approximately $2,721 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.

View full property details