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2921 PORTULACA DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath3,188 sqftBuilt 2007

Property at a Glance

This home is estimated between $818,694 and $1,245,138, with a best estimate of $1,145,647. 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

$818,694 $1,245,138
Best Estimate
$1,145,647
WCAD Value
$720,044
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 $818,694 and $1,245,138. 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 $818,694

Adjusted +$87,313 for 236 sqft more living space and +$13,802 for being newer. Net adjustment: +$101,115.

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 $1,145,647

Adjusted +$317,435 for 858 sqft more living space and +$16,562 for being newer. Net adjustment: +$333,997.

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 $1,180,872

Adjusted +$315,215 for 852 sqft more living space and +$16,562 for being newer. Net adjustment: +$331,777.

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 $1,130,928

Adjusted +$301,526 for 815 sqft more living space and +$16,562 for being newer. Net adjustment: +$318,088.

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 $1,245,138

Adjusted +$352,582 for 953 sqft more living space and +$13,802 for being newer. Net adjustment: +$366,384.

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
$720,044
Median
$750,158

This home is -4.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,956 across all districts. With a homestead exemption claimed, that drops to $11,572 — saving $1,384 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%$6,431
Round RockCity0.3720%$2,679
Williamson CountyCounty0.3694%$2,660
Austin Community Collegespecial0.1034%$745
Williamson County FM/RdCounty0.0443%$319
Upper Brushy Creek WCIDWater0.0170%$122
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$12,956

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,145,647 would pay approximately $7,151 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.

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