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

2009 MCILLWAIN CV, CEDAR PARK, TX 78613

CEDAR PARK, 78613 — williamson County

3 bed2 bath2,024 sqftBuilt 2008

Property at a Glance

This home is estimated between $444,978 and $613,408, with a best estimate of $489,136. That places the property below the L315598D - Buttercup Creek Ph 4, Sec 3,4,6 & 9 median of $578,451, in a neighborhood that declined 8.7% over the past year.

Estimated Value Range

$444,978 $613,408
Best Estimate
$489,136
WCAD Value
$476,819
High Confidence

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

Based on 5 comparable properties in L315598D - Buttercup Creek Ph 4, Sec 3,4,6 & 9, this home's estimated market value is between $444,978 and $613,408. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

2012 MCILLWAIN CV, CEDAR PARK, TX 78613
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,883 sqft Built 2007
Raw Value $573,439
Adjusted Value $613,408

Adjusted +$36,202 for 141 sqft more living space and +$3,767 for being newer. Net adjustment: +$39,969.

2004 MCILLWAIN CV, CEDAR PARK, TX 78613
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,052 sqft Built 2006
Raw Value $470,659
Adjusted Value $471,003

Adjusted -$7,189 for 28 sqft less living space and +$7,533 for being newer. Net adjustment: +$344.

2006 MCILLWAIN CV, CEDAR PARK, TX 78613
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,224 sqft Built 2007
Raw Value $492,561
Adjusted Value $444,978

Adjusted -$51,350 for 200 sqft less living space and +$3,767 for being newer. Net adjustment: -$47,583.

2011 MCILLWAIN CV, CEDAR PARK, TX 78613
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,897 sqft Built 2008
Raw Value $560,621
Adjusted Value $593,228

Adjusted +$32,607 for 127 sqft more living space. Net adjustment: +$32,607.

2017 MCILLWAIN CV, CEDAR PARK, TX 78613
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,042 sqft Built 2010
Raw Value $501,291
Adjusted Value $489,136

Adjusted -$4,622 for 18 sqft less living space and -$7,533 for being older. Net adjustment: -$12,155.

The Neighborhood

This home is valued 17.6% below the L315598D - Buttercup Creek Ph 4, Sec 3,4,6 & 9 median of $578,451. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 8.7% over the past year.

L315598D - Buttercup Creek Ph 4, Sec 3,4,6 & 9

below average
1,231 Properties
$578,451 Median Value
-8.7% YoY Change
1% Have Pool
100% Have Garage
This Home
$476,819
Median
$578,451

This home is -17.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,446 across all districts. With a homestead exemption claimed, that drops to $7,818 — saving $1,628 per year. That's $652 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
Leander ISDSchool1.0869%$5,183
Williamson CountyCounty0.3694%$1,762
Cedar ParkCity0.3600%$1,717
Austin Community Collegespecial0.1034%$493
Williamson County FM/RdCounty0.0443%$211
Upper Brushy Creek WCIDWater0.0170%$81
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9811%$9,446

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $489,136 would pay approximately $3,053 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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