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. 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. These updates are listed here, as well as links to the model codes.

The BBRS regularly updates the state building codes as new information and technology becomes available and change is warranted. 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 Residential Code regulate all residential buildings, including: one- and two-family structures accessory structures, such as open porches, garages, and outbuildings and part-time or vacation rentals.

The other codes regulate single-family and townhouse structures. These structures are typically owned by large entities, such as schools and hospitals.

Instead, this code regulates multiple-family structures. The Base Code does not regulate single-family structures or townhouses. The Massachusetts State Building Code is divided into two parts: The Residential and the Base Codes.

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