Next week, the Illinois House of Representatives is expected to approve an extension, to Jan. 1 of the effective date for the state's adoption of the 2012 International Energy Conservation Code (IECC). The state’s Senate has already okayed the extension.
The state projects that homes built to the 2012 IECC specifications will be 15% more energy efficient than those built under the 2009 code. The HBA calculates that compliance with the new code would add between $5,000 and $6,200 to the cost of the house.
