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1505 FOPPIANO LOOP, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath2,228 sqftBuilt 2004

Property at a Glance

This home is estimated between $359,414 and $665,217, with a best estimate of $577,314. 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

$359,414 $665,217
Best Estimate
$577,314
WCAD Value
$614,875
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 $359,414 and $665,217. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

1503 FOPPIANO LOOP, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
3 bed 2 bath 2,303 sqft Built 2003
Raw Value $402,441
Adjusted Value $387,774

Adjusted -$20,099 for 75 sqft less living space and +$5,432 for being newer. Net adjustment: -$14,667.

1504 FOPPIANO LOOP, ROUND ROCK, TX 78665
0.03 mi 100% similar Same subdivision
4 bed 2 bath 2,932 sqft Built 2002
Raw Value $537,209
Adjusted Value $359,414

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

1502 FOPPIANO LOOP, ROUND ROCK, TX 78665
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,109 sqft Built 2004
Raw Value $572,296
Adjusted Value $604,186

Adjusted +$31,890 for 119 sqft more living space. Net adjustment: +$31,890.

1506 FOPPIANO LOOP, ROUND ROCK, TX 78665
0.03 mi 100% similar Same subdivision
4 bed 3 bath 2,058 sqft Built 2003
Raw Value $614,228
Adjusted Value $665,217

Adjusted +$45,557 for 170 sqft more living space and +$5,432 for being newer. Net adjustment: +$50,989.

4 bed 3 bath 1,995 sqft Built 1999
Raw Value $487,713
Adjusted Value $577,314

Adjusted +$62,440 for 233 sqft more living space and +$27,161 for being newer. Net adjustment: +$89,601.

The Neighborhood

This home is valued 36.2% 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
$614,875
Median
$451,534

This home is +36.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,063 across all districts. With a homestead exemption claimed, that drops to $9,699 — saving $1,364 per year. That's $808 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%$5,491
Round RockCity0.3720%$2,287
Williamson CountyCounty0.3694%$2,272
Austin Community Collegespecial0.1034%$636
Williamson County FM/RdCounty0.0443%$273
Upper Brushy Creek WCIDWater0.0170%$105
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$11,063

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $577,314 would pay approximately $3,604 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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