New Hampshire Adopts 2015 I-Codes

Via House Bill 562, as of September 15, 2019, New Hampshire will enforce the 2015 editions of ICC codes, including:

  • 2015 International Building Code (IBC)
  • 2015 International Existing Building Code (IEBC)
  • 2015 International Plumbing Code (IPC)
  • 2015 International Mechanical Code (IMC)
  • 2015 International Energy Conservation Code (IECC)
  • 2015 International Residential Code (IRC)

The International Swimming Pool and Spa Code (2015 edition) is now also adopted by New Hampshire as part of this code adoption cycle.

These codes replace the previously-adopted 2009 editions. There is no grace period to continue using the 2009 codes except through special approval. Similar to previous code adoptions, there are a number of unique state amendments which are located here:

There are many changes between the 2009 and 2015 editions of the codes of which designers, builders, owners, and AHJs need to be aware. If you are interested to learn more about the code changes or implications on your project(s), please reach out to us.


Application of any information provided, for any use, is at the reader’s risk and without liability to Code Red Consultants. Code Red Consultants does not warrant the accuracy of any information contained in this blog as applicable codes and standards change over time. The application, enforcement and interpretation of codes and standards may vary between Authorities Having Jurisdiction and for this reason, registered design professionals should be consulted to determine the appropriate application of codes and standards to a specific scope of work.