Stretch Code


The Stretch Energy Code is an appendix to the Massachusetts Building Code, created by the Massachusetts Board of Building Regulations and Standards (BBRS).

It results in cost savings and environmental benefits through improved building energy efficiency. Since its adoption is optional, municipalities in the commonwealth may adopt the Stretch Energy Code on an individual basis.


The Stretch Energy Code was developed to improve the energy efficiency of its buildings. It is based on the published International Energy Conservation Code (IECC) with an increase in building efficiency requirements and the use of 3rd-party testing and rating of building energy performance. It has both commercial and residential components. The State Building Code including the Stretch Code was revised in October 2017 to include higher thresholds for energy conservation.

Brookline is currently assessing the Stretch Energy Code Appendix for local adoption.


The Town of Brookline adopted the Stretch Code in 2010.

More Information

For more information, please visit Energy Provisions of the State Building Code (780 CMR).