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

2834 PIPER SONOMA PL, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath2,926 sqftBuilt 2006

Property at a Glance

This home is estimated between $495,233 and $832,820, with a best estimate of $655,272. 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

$495,233 $832,820
Best Estimate
$655,272
WCAD Value
$510,177
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 $495,233 and $832,820. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

2843 PIPER SONOMA PL, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,939 sqft Built 2006
Raw Value $658,756
Adjusted Value $655,272

Adjusted -$3,484 for 13 sqft less 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 $495,233

Adjusted -$10,451 for 39 sqft less living space and -$5,432 for being older. Net adjustment: -$15,883.

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 $832,820

Adjusted +$189,195 for 706 sqft more living space. Net adjustment: +$189,195.

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 $504,965

Adjusted +$47,165 for 176 sqft more living space and -$18,697 for no pool. Net adjustment: +$28,468.

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 $755,741

Adjusted +$234,752 for 876 sqft more living space. Net adjustment: +$234,752.

The Neighborhood

This home is valued 13.0% 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

typical
1,029 Properties
$451,534 Median Value
-7.0% YoY Change
2% Have Pool
100% Have Garage
This Home
$510,177
Median
$451,534

This home is +13.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,179 across all districts. With a homestead exemption claimed, that drops to $7,835 — saving $1,344 per year. That's $653 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%$4,556
Round RockCity0.3720%$1,898
Williamson CountyCounty0.3694%$1,885
Austin Community Collegespecial0.1034%$528
Williamson County FM/RdCounty0.0443%$226
Upper Brushy Creek WCIDWater0.0170%$87
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$9,179

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $655,272 would pay approximately $4,090 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