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2915 E PIPER SONOMA CT, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath3,209 sqftBuilt 2008

Property at a Glance

This home is estimated between $611,282 and $890,512, with a best estimate of $674,139. 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

$611,282 $890,512
Best Estimate
$674,139
WCAD Value
$597,724
High Confidence

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

Based on 5 comparable properties in R530506E - SONOMA ALL SECTIONS, this home's estimated market value is between $611,282 and $890,512. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

2916 E PIPER SONOMA CT, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,739 sqft Built 2006
Raw Value $474,467
Adjusted Value $611,282

Adjusted +$125,951 for 470 sqft more living space and +$10,864 for being newer. Net adjustment: +$136,815.

2820 W PIPER SONOMA CT, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,748 sqft Built 2006
Raw Value $558,433
Adjusted Value $674,139

Adjusted +$123,539 for 461 sqft more living space and +$10,864 for being newer and -$18,697 for no pool. Net adjustment: +$115,706.

2813 W PIPER SONOMA CT, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 3,006 sqft Built 2007
Raw Value $617,886
Adjusted Value $677,718

Adjusted +$54,400 for 203 sqft more living space and +$5,432 for being newer. Net adjustment: +$59,832.

2816 W PIPER SONOMA CT, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 3,050 sqft Built 2007
Raw Value $573,363
Adjusted Value $621,404

Adjusted +$42,609 for 159 sqft more living space and +$5,432 for being newer. Net adjustment: +$48,041.

2806 W PIPER SONOMA CT, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,152 sqft Built 2007
Raw Value $601,824
Adjusted Value $890,512

Adjusted +$283,256 for 1,057 sqft more living space and +$5,432 for being newer. Net adjustment: +$288,688.

The Neighborhood

This home is valued 32.4% 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
$597,724
Median
$451,534

This home is +32.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,755 across all districts. With a homestead exemption claimed, that drops to $9,394 — saving $1,361 per year. That's $783 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%$5,338
Round RockCity0.3720%$2,224
Williamson CountyCounty0.3694%$2,208
Austin Community Collegespecial0.1034%$618
Williamson County FM/RdCounty0.0443%$265
Upper Brushy Creek WCIDWater0.0170%$102
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$10,755

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $674,139 would pay approximately $4,208 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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