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

3316 PORTER CREEK CV, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath2,222 sqftBuilt 2006

Property at a Glance

This home is estimated between $373,374 and $488,686, with a best estimate of $455,743. 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

$373,374 $488,686
Best Estimate
$455,743
WCAD Value
$390,154
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 $373,374 and $488,686. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3312 PORTER CREEK CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,756 sqft Built 2006
Raw Value $361,490
Adjusted Value $486,369

Adjusted +$124,879 for 466 sqft more living space. Net adjustment: +$124,879.

3321 PORTER CREEK CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,293 sqft Built 2006
Raw Value $400,533
Adjusted Value $381,506

Adjusted -$19,027 for 71 sqft less living space. Net adjustment: -$19,027.

3300 PORTER CREEK CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,776 sqft Built 2006
Raw Value $369,166
Adjusted Value $488,686

Adjusted +$119,520 for 446 sqft more living space. Net adjustment: +$119,520.

3317 PORTER CREEK CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,378 sqft Built 2006
Raw Value $415,179
Adjusted Value $373,374

Adjusted -$41,805 for 156 sqft less living space. Net adjustment: -$41,805.

3309 PORTER CREEK CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,915 sqft Built 2006
Raw Value $373,473
Adjusted Value $455,743

Adjusted +$82,270 for 307 sqft more living space. Net adjustment: +$82,270.

The Neighborhood

This home is valued 13.6% below the R530506E - SONOMA ALL SECTIONS median of $451,534. That positions it competitively for buyers comparing within the neighborhood. 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
$390,154
Median
$451,534

This home is -13.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,020 across all districts. With a homestead exemption claimed, that drops to $5,698 — saving $1,322 per year. That's $475 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%$3,484
Round RockCity0.3720%$1,451
Williamson CountyCounty0.3694%$1,441
Austin Community Collegespecial0.1034%$403
Williamson County FM/RdCounty0.0443%$173
Upper Brushy Creek WCIDWater0.0170%$66
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,020

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $455,743 would pay approximately $2,845 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