To truly increase, real estate values must grow faster than inflation plus an owner's effective property tax rate - an average appreciation of about 5 percent in Illinois.
According to the U.S. Bureau of Labor Statistics' Consumer Price Index, the U.S. dollar has experienced an average inflation rate of 2.47 percent annually since 2000.
The average effective property tax rate in Illinois was 2.3 percent in 2017, according to the Illinois Policy Institute.
Here's how Oak Brook home prices have performed since 2007.
Oak Brook historical median home sales
Year
Properties sold (#)
Median sale price (nominal)
Median sale price (real)
Year-over-year change
2007
109
$934,000
$1,102,120
-
2008
69
$775,000
$868,000
-21.2%
2009
72
$660,000
$752,400
-13.3%
2010
88
$665,000
$744,800
-1%
2011
80
$675,000
$735,750
-1.2%
2012
128
$620,000
$663,400
-9.8%
2013
150
$697,500
$732,375
10.4%
2014
140
$635,000
$654,050
-10.7%
2015
122
$730,500
$752,415
15%
2016
120
$690,000
$703,800
-6.5%
2017
68
$735,000
$735,000
4.4%
Total change in price
-33.3%
Where sale prices were unavailable, the home's assessed value was substituted.
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