State Guides to the Residential Requirements of the Different IECC® Versions

State Code Guides for the 2000, 2003, 2004, 2006 and 2009 IECC®

Many states and local jurisdictions have adopted either the 2000, 2003 or 2009 IECC® or the 2004 supplement. Others are currently reviewing a version of the IECC, including the 2009 IECC, for possible adoption. RECA developed the State Code Guides on this website to assist states and local jurisdictions that have adopted, or are considering adopting, any version of the IECC. These guides are compliance aids for determining either the 2000, 2003, 2004, 2006 or 2009 IECC requirements for each state and county, but they do NOT include any state-specific or local amendments that have been adopted in the various jurisdictions. The guides reproduced here are meant to illustrate the IECC requirements for new residential construction and are not intended to be an official compliance tool, unless your local code official has approved them as an acceptable method of compliance. Before relying on the values or requirements indicated in these guides, please contact your local code official. In addition, note that these guides do not address commercial building requirements.

View and Print a State Code Guide

To view and print a State Code Guide, determine which code version you require information on: the 2000, 2003, 2004, 2006 or 2009 IECC®. Then refer to the relevant drop-down menu below and select your state. Use the color-coded state map on the first page of the guide to locate the county in which the home will be built, and which climate zone it is in. The second page shows which particular standards the code prescribes for that climate zone. Detailed instructions on how to determine these standards are included in the guides.

2000 IECC®

2003 IECC®

2004 IECC® Supplement

2006 IECC®

2009 IECC®

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Limitations / Disclaimers

It is RECA’s objective to support and urge all states and local jurisdictions to adopt and implement the IECC®. This website and the IECC Guides included here have been developed to further this objective. They are intended to be compliance aids for states and local jurisdictions reviewing and considering adopting the IECC and for determining the IECC prescriptive requirements for each state and county, but do not provide a guarantee for meeting all of the IECC requirements. The information on this website and on these guides has not been customized to reflect any state-specific or local amendments to the IECC that states or local jurisdictions may have adopted, nor does this information reflect any state- or locally-developed energy standards that may have been adopted in place of the IECC. For these reasons, this website and the guides do not provide a guarantee for meeting the state or local energy codes. For additional details on the IECC, please contact the International Code Council® at www.iccsafe.org or (703) 931-4533. For additional details on the energy code requirements in your state or local jurisdiction, please contact your local building code official.