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1504 FOPPIANO LOOP, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath2,932 sqftBuilt 2002

Property at a Glance

This home is estimated between $565,569 and $792,670, with a best estimate of $766,172. That places the property above the R530506E - SONOMA ALL SECTIONS median of $451,534, in a neighborhood that declined 7.0% over the past year.

Estimated Value Range

$565,569 $792,670
Best Estimate
$766,172
WCAD Value
$537,209
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $565,569 and $792,670. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

1502 FOPPIANO LOOP, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
3 bed 2 bath 2,109 sqft Built 2004
Raw Value $572,296
Adjusted Value $781,981

Adjusted +$220,549 for 823 sqft more living space and -$10,864 for being older. Net adjustment: +$209,685.

4 bed 2 bath 2,720 sqft Built 1996
Raw Value $599,225
Adjusted Value $688,630

Adjusted +$56,812 for 212 sqft more living space and +$32,593 for being newer. Net adjustment: +$89,405.

1500 FOPPIANO LOOP, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
4 bed 3 bath 2,241 sqft Built 2004
Raw Value $591,861
Adjusted Value $766,172

Adjusted +$185,175 for 691 sqft more living space and -$10,864 for being older. Net adjustment: +$174,311.

1505 FOPPIANO LOOP, ROUND ROCK, TX 78665
0.03 mi 100% similar Same subdivision
4 bed 3 bath 2,228 sqft Built 2004
Raw Value $614,875
Adjusted Value $792,670

Adjusted +$188,659 for 704 sqft more living space and -$10,864 for being older. Net adjustment: +$177,795.

1503 FOPPIANO LOOP, ROUND ROCK, TX 78665
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,303 sqft Built 2003
Raw Value $402,441
Adjusted Value $565,569

Adjusted +$168,560 for 629 sqft more living space and -$5,432 for being older. Net adjustment: +$163,128.

The Neighborhood

This home is valued 19.0% above the R530506E - SONOMA ALL SECTIONS median of $451,534. With 1,029 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 7.0% over the past year.

R530506E - SONOMA ALL SECTIONS

above average
1,029 Properties
$451,534 Median Value
-7.0% YoY Change
2% Have Pool
100% Have Garage
This Home
$537,209
Median
$451,534

This home is +19.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,666 across all districts. With a homestead exemption claimed, that drops to $8,316 — saving $1,350 per year. That's $693 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
Round Rock ISDSchool0.8931%$4,798
Round RockCity0.3720%$1,998
Williamson CountyCounty0.3694%$1,985
Austin Community Collegespecial0.1034%$555
Williamson County FM/RdCounty0.0443%$238
Upper Brushy Creek WCIDWater0.0170%$91
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$9,666

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $766,172 would pay approximately $4,782 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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