Massachusetts Building Codes and Contacts

The following information is reprinted with permission from the Building Codes Assistance Project:
Massachusetts climate zones
Current Commercial Code

2012 IECC or ASHRAE 90.1-2010 with Massachusetts amendments
Passed 7/9/2013, effective 7/1/2014

Current Residential Code

2012 IECC with Massachusetts amendments
Passed 7/9/2013, effective 7/1/2014

Numerous amendments to Massachusetts’ base code have increased its stringency from the level of the 2009 IECC to that of the 2012 IECC. You can read about these amendments in detail here.

Stretch Code

As of late 2015, 161 Massachusetts municipalities have adopted the state’s Stretch Code, which was intended to be 20% more efficient than the base code. However, this stretch code is based on the 2009 IECC and ASHRAE 90.1-2007 until its next update.

Read more about:

Climate Zone: 5A

Code Adoption and Change Process

Code Change Process

Code amendment cycles occur twice a year, as required by statute, and include a public hearing process. The Board of Building Regulations and Standards has sole authority to promulgate the Massachusetts State Building Code (MSBC). Anyone can submit code change proposals to the Board. Adopted code changes are typically promulgated during the year of adoption.

Code Change Cycle

The state Board of Building Regulations and Standards (BBRS) is required to revise the building code to the latest version of the IECC every three years. Public hearings are held each May and November to consider proposed modifications to the code.

Next Code Update

At the beginning of 2016, the Massachusetts Board of Buildings Regulations and Standards (BBRS) completed a final draft of the ninth edition of the MA State Building Code, based on the suite of 2015 I-codes, including the 2015 IECC. Details about the review and public hearing processes that will take place in 2016 can be found here.

Massachusetts Code Contacts

Tom Riley
Code Development Manager
Board of Building Regulations and Standards
Email: tom.riley@state.ma.us

Ian Finlayson
Manager of Buildings and Climate Programs
Department of Energy Resources (DOER)
Email: ian.finlayson@state.ma.us

Carolyn Sarno Goldthwaite
Senior Program Manager
High Performance Buildings
Northeast Energy Efficiency Partnerships (NEEP)
Email: cgoldthwaite@neep.org

This information was compiled by the Building Codes Assistance Project, and used with their permission.