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

2015 MCILLWAIN CV, CEDAR PARK, TX 78613

CEDAR PARK, 78613 — williamson County

4 bed3 bath1,596 sqftBuilt 2009

Property at a Glance

This home is estimated between $338,854 and $736,669, with a best estimate of $507,284. 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

$338,854 $736,669
Best Estimate
$507,284
WCAD Value
$583,037
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 $338,854 and $736,669. 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 $507,284

Adjusted -$73,688 for 287 sqft less living space and +$7,533 for being newer. Net adjustment: -$66,155.

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 $338,854

Adjusted -$161,240 for 628 sqft less living space and +$7,533 for being newer. Net adjustment: -$153,707.

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 $487,106

Adjusted -$77,282 for 301 sqft less living space and +$3,767 for being newer. Net adjustment: -$73,515.

2002 MCILLWAIN CV, CEDAR PARK, TX 78613
0.00 mi 100% similar Same subdivision
5 bed 3 bath 1,240 sqft Built 2006
Raw Value $633,966
Adjusted Value $736,669

Adjusted +$91,403 for 356 sqft more living space and +$11,300 for being newer. Net adjustment: +$102,703.

2008 MCILLWAIN CV, CEDAR PARK, TX 78613
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,833 sqft Built 2007
Raw Value $632,485
Adjusted Value $579,168

Adjusted -$60,850 for 237 sqft less living space and +$7,533 for being newer. Net adjustment: -$53,317.

The Neighborhood

This home is in line with the L315598D - Buttercup Creek Ph 4, Sec 3,4,6 & 9 median of $578,451. Note that values in this subdivision declined 8.7% over the past year.

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

typical
1,231 Properties
$578,451 Median Value
-8.7% YoY Change
1% Have Pool
100% Have Garage
This Home
$583,037
Median
$578,451

This home is +0.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,550 across all districts. With a homestead exemption claimed, that drops to $9,900 — saving $1,650 per year. That's $825 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%$6,337
Williamson CountyCounty0.3694%$2,154
Cedar ParkCity0.3600%$2,099
Austin Community Collegespecial0.1034%$603
Williamson County FM/RdCounty0.0443%$258
Upper Brushy Creek WCIDWater0.0170%$99
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9811%$11,550

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $507,284 would pay approximately $3,166 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.

View full property details