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

2904 PORTULACA DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath3,193 sqftBuilt 2007

Property at a Glance

This home is estimated between $820,544 and $1,246,988, with a best estimate of $1,147,497. That places the property above the R102606C - SENDERO SPRINGS / BEHREN'S RANCH R5 median of $750,158, in a neighborhood that appreciated 0.3% over the past year.

Estimated Value Range

$820,544 $1,246,988
Best Estimate
$1,147,497
WCAD Value
$719,853
High Confidence

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

Based on 5 comparable properties in R102606C - SENDERO SPRINGS / BEHREN'S RANCH R5, this home's estimated market value is between $820,544 and $1,246,988. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3065 PORTULACA DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,952 sqft Built 2012
Raw Value $717,579
Adjusted Value $820,544

Adjusted +$89,163 for 241 sqft more living space and +$13,802 for being newer. Net adjustment: +$102,965.

3032 PORTULACA DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,330 sqft Built 2013
Raw Value $811,650
Adjusted Value $1,147,497

Adjusted +$319,285 for 863 sqft more living space and +$16,562 for being newer. Net adjustment: +$335,847.

3056 PORTULACA DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,336 sqft Built 2013
Raw Value $849,095
Adjusted Value $1,182,722

Adjusted +$317,065 for 857 sqft more living space and +$16,562 for being newer. Net adjustment: +$333,627.

3036 PORTULACA DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,373 sqft Built 2013
Raw Value $812,840
Adjusted Value $1,132,778

Adjusted +$303,376 for 820 sqft more living space and +$16,562 for being newer. Net adjustment: +$319,938.

2945 PORTULACA DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,235 sqft Built 2012
Raw Value $878,754
Adjusted Value $1,246,988

Adjusted +$354,432 for 958 sqft more living space and +$13,802 for being newer. Net adjustment: +$368,234.

The Neighborhood

This home is valued 4.0% below the R102606C - SENDERO SPRINGS / BEHREN'S RANCH R5 median of $750,158. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 0.3% over the past year.

R102606C - SENDERO SPRINGS / BEHREN'S RANCH R5

typical
1,049 Properties
$750,158 Median Value
+0.3% YoY Change
1% Have Pool
99% Have Garage
This Home
$719,853
Median
$750,158

This home is -4.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,952 across all districts. With a homestead exemption claimed, that drops to $11,569 — saving $1,383 per year. That's $964 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%$6,429
Round RockCity0.3720%$2,678
Williamson CountyCounty0.3694%$2,659
Austin Community Collegespecial0.1034%$744
Williamson County FM/RdCounty0.0443%$319
Upper Brushy Creek WCIDWater0.0170%$122
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$12,952

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,147,497 would pay approximately $7,163 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 4/19/2026.

View full property details