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2843 PIPER SONOMA PL, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath2,939 sqftBuilt 2006

Property at a Glance

This home is estimated between $498,716 and $836,304, with a best estimate of $513,661. 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

$498,716 $836,304
Best Estimate
$513,661
WCAD Value
$658,756
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 $498,716 and $836,304. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

2834 PIPER SONOMA PL, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,926 sqft Built 2006
Raw Value $510,177
Adjusted Value $513,661

Adjusted +$3,484 for 13 sqft more living space. Net adjustment: +$3,484.

2827 PIPER SONOMA PL, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,965 sqft Built 2007
Raw Value $511,116
Adjusted Value $498,716

Adjusted -$6,968 for 26 sqft less living space and -$5,432 for being older. Net adjustment: -$12,400.

2830 PIPER SONOMA PL, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,220 sqft Built 2006
Raw Value $643,625
Adjusted Value $836,304

Adjusted +$192,679 for 719 sqft more living space. Net adjustment: +$192,679.

2823 PIPER SONOMA PL, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,750 sqft Built 2006
Raw Value $476,497
Adjusted Value $508,449

Adjusted +$50,649 for 189 sqft more living space and -$18,697 for no pool. Net adjustment: +$31,952.

2819 PIPER SONOMA PL, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,050 sqft Built 2006
Raw Value $520,989
Adjusted Value $759,225

Adjusted +$238,236 for 889 sqft more living space. Net adjustment: +$238,236.

The Neighborhood

This home is valued 45.9% 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
$658,756
Median
$451,534

This home is +45.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,853 across all districts. With a homestead exemption claimed, that drops to $10,481 — saving $1,372 per year. That's $873 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%$5,883
Round RockCity0.3720%$2,451
Williamson CountyCounty0.3694%$2,434
Austin Community Collegespecial0.1034%$681
Williamson County FM/RdCounty0.0443%$292
Upper Brushy Creek WCIDWater0.0170%$112
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$11,853

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $513,661 would pay approximately $3,206 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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