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

2003 MCILLWAIN CV, CEDAR PARK, TX 78613

CEDAR PARK, 78613 — williamson County

3 bed2 bath2,027 sqftBuilt 2010

Property at a Glance

This home is estimated between $453,281 and $621,711, with a best estimate of $497,440. 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

$453,281 $621,711
Best Estimate
$497,440
WCAD Value
$471,119
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 $453,281 and $621,711. 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 $621,711

Adjusted +$36,972 for 144 sqft more living space and +$11,300 for being newer. Net adjustment: +$48,272.

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 $479,306

Adjusted -$6,419 for 25 sqft less living space and +$15,066 for being newer. Net adjustment: +$8,647.

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 $453,281

Adjusted -$50,580 for 197 sqft less living space and +$11,300 for being newer. Net adjustment: -$39,280.

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 $601,532

Adjusted +$33,378 for 130 sqft more living space and +$7,533 for being newer. Net adjustment: +$40,911.

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 $497,440

Adjusted -$3,851 for 15 sqft less living space. Net adjustment: -$3,851.

The Neighborhood

This home is valued 18.6% 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
$471,119
Median
$578,451

This home is -18.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,333 across all districts. With a homestead exemption claimed, that drops to $7,707 — saving $1,626 per year. That's $642 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%$5,121
Williamson CountyCounty0.3694%$1,741
Cedar ParkCity0.3600%$1,696
Austin Community Collegespecial0.1034%$487
Williamson County FM/RdCounty0.0443%$209
Upper Brushy Creek WCIDWater0.0170%$80
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9811%$9,333

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $497,440 would pay approximately $3,105 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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