Current News: 
On July 19, 2016 Massachusetts completed its base and stretch energy code update process. Massachusetts has amended its 8th edition of the state's building codes to include the 2015 IECC / ASHRAE 2013, which will take effect on January 1, 2017. The adopted code includes state amendments to the base energy code (residential and commercial, to be published), as well as an updated stretch energy code (adopted as is). Amendments not incorporated into this 8th edition, such as the renewable energy readiness provisions, will be reconsidered when the state later adopts the entire 2015 I-code package as its 9th edition.
Current Code:
2012 IECC
Approved Compliance Tools: Can use COMcheck
Approximate Energy Efficiency: Equivalent to 2012 IECC
Effective Date:
Jul. 01, 2014
Adoption Date:
Jul. 09, 2013
Code Enforcement:
DOE Determination: ASHRAE 90.1-2007: Yes
ASHRAE 90.1-2010: Yes

Energy cost savings for Massachusetts resulting from the state updating its commercial and residential building energy codes in accordance with federal law are significant, estimated to be on the order of nearly $144 million annually by 2030.

Massachusetts DOE Determination Letter, May 31, 2013

Massachusetts State Certification of Commercial and Residential Building Energy Codes