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2940 CASTELLAN LN, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath1,915 sqftBuilt 2011

Property at a Glance

This home is estimated between $378,964 and $587,474, with a best estimate of $540,140. That places the property above the R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN median of $499,831, in a neighborhood that declined 1.7% over the past year.

Estimated Value Range

$378,964 $587,474
Best Estimate
$540,140
WCAD Value
$469,065
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN. The estimated range of $378,964 and $587,474 should be treated as a rough guide.

Comparable Properties (5)

2624 ESTEFANIA LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,881 sqft Built 2010
Raw Value $528,350
Adjusted Value $540,140

Adjusted +$7,414 for 34 sqft more living space and +$4,376 for being newer. Net adjustment: +$11,790.

2664 ESTEFANIA LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,851 sqft Built 2012
Raw Value $547,227
Adjusted Value $556,808

Adjusted +$13,957 for 64 sqft more living space and -$4,376 for being older. Net adjustment: +$9,581.

4 bed 2 bath 2,028 sqft Built 2011
Raw Value $612,116
Adjusted Value $587,474

Adjusted -$24,642 for 113 sqft less living space. Net adjustment: -$24,642.

3 bed 2 bath 1,939 sqft Built 2007
Raw Value $374,319
Adjusted Value $386,588

Adjusted -$5,234 for 24 sqft less living space and +$17,503 for being newer. Net adjustment: +$12,269.

3 bed 2 bath 1,960 sqft Built 2007
Raw Value $371,274
Adjusted Value $378,964

Adjusted -$9,813 for 45 sqft less living space and +$17,503 for being newer. Net adjustment: +$7,690.

The Neighborhood

This home is valued 6.2% below the R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN median of $499,831. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 1.7% over the past year.

R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN

typical
695 Properties
$499,831 Median Value
-1.7% YoY Change
1% Have Pool
100% Have Garage
This Home
$469,065
Median
$499,831

This home is -6.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,911 across all districts. With a homestead exemption claimed, that drops to $7,574 — saving $1,337 per year. That's $631 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%$4,189
Paloma Lakes MUD #1MUD0.3725%$1,747
Williamson CountyCounty0.3694%$1,733
Austin Community Collegespecial0.1034%$485
Williamson County ESD #9 - Round RockESD0.0999%$469
Williamson County FM/RdCounty0.0443%$208
Upper Brushy Creek WCIDWater0.0170%$80
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8997%$8,911

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $540,140 would pay approximately $3,372 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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