The International Energy Conservation Code (IECC) is the most widely adopted building energy code in the nation. Published by the International Code Council (ICC), the IECC provides design and construction criteria for the building envelope, mechanical and electrical systems, lighting and other energy uses associated with buildings.
The IECC serves as the basis for most state and local building energy codes. However, it is not in effect or enforceable until adopted by a state or local jurisdiction. Accordingly, state and local governments may adopt the IECC in whole, in part or amend the model provisions to accommodate specific regional conditions.
This document is designed to assist code officials and apartment industry representatives as jurisdictions consider adoption of the latest IECC version - the 2012 IECC. It includes specific recommendations and model language for amending the 2012 IECC to accommodate the unique characteristics of multifamily properties.
Efforts to significantly increase the energy savings requirements of the IECC began with the 2009 edition, which includes new and significantly altered provisions over previous code versions. In July 2011, the ICC published the 2012 edition of the IECC, which includes even more aggressive changes and considerable administrative differences compared to the 2009 code. It is estimated that the 2012 IECC will require a 30 percent increase in energy efficiency over 2006 levels.
To gain an understanding of the effects of these changes in the multifamily sector, NMHC/NAA commissioned a study examining the costs, benefits and practical limitations of the 2009 and 2012 IECC editions. The report, Impact of the 2009 and 2012 International Energy Conservation Code in Multifamily Buildings (LINK TO www.nmhc.org/goto/55323), finds that the 2009 and 2012 codes will substantially impact apartment building design and construction costs and that compliance costs differ widely, based on the type and location of the building.