The Massachusetts State Building Code consists of a series of international model codes and any state-specific amendments adopted by the Board of Building Regulations and Standards (BBRS). The BBRS regularly updates the state building codes as new information and technology becomes available and change is warranted. These updates are listed here, as well as links to the model codes.
The MSBC is separated into two distinct volumes: The Residential volume regulates all one- and two-family structures and townhouses that are three stories or less, as well as their accessory structures; The Base volume regulates all structures that are not covered by the Residential regulations.
If you wish to purchase an official copy of the full code, see the "Get an Official Copy of the Building Codes" guidance below in the "What you Need to Know" section.