Ninth Edition of the State Building Code Update (780 CMR).

The ninth edition of the Massachusetts State Building Code will take effect on October 20, 2017 and will run in conjunction with the eight edition through December 31, 2017. As of January 1, 2018 only the ninth edition will be used for new construction. Below is a notice issued by the Office of Public Safety and Inspections.

Ninth Edition of the State Building Code Update

(780 CMR)

Ladies and Gentlemen –

This message is sent as a reminder that the ninth edition building code was filed with the Secretary of State and will become first effective on October 20, 2017.  With a shortened concurrency period, the new code will come into full force and effect on January 1, 2018.  The new, ninth edition code is based on modified versions of the following 2015 codes as published by the International Code Council (ICC).

  •          The International Building Code (IBC);
  •          International Residential Code (IRC);
  •          International Existing Building Code (IEBC);
  •          International Mechanical Code (IMC);
  •          International Energy Conservation Code (IECC);
  •          International Swimming Pool and Spa Code (ISPSC);
  •          Portions of the International Fire Code (IFC).

The 2015 International codes may be viewed @ I-Codes.  The Massachusetts amendments for the base code may be viewed @ Base Code Amendments and the residential code amendments may be viewed @ Residential Code Amendments.

Please remember that the Massachusetts amendments posted on-line are unofficial versions and are meant for convenience only.  (There are some spacing issues in the posted documents that make words appear to be spelled incorrectly.  We are aware of the issue and are working to correct.  Please pardon the inconvenience.)

Official versions of the Massachusetts amendments may be purchased from the State House Bookstore after October 20th @ Shop the Bookstore and any of the I-Codes may be purchased from the International Code Council (ICC) @

editionally, the ICC publishes transition documents that identify changes from the 2009 to the 2015 I-Codes for those who may have interest.

For those interested in changes between the eighth and ninth edition versions of the code (whether through the ICC or via Massachusetts amendments), the following  PowerPoint presentation materials may be helpful.

It is hoped that this information is helpful.


Robert Anderson
Division of Professional Licensure
Office of Public Safety and Inspections
Chief of Inspections – Building & Engineering
One Ashburton Place – Room 1301
Boston, MA   02108

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