Building Energy Standards Update

Residential and Commercial Building Energy Standards to be Updated in 2018

An update to the Residential and Commercial Building Energy Standards is currently underway. Look for new information on this page over the next several months about the code update process, notice of stakeholder meetings, invitations to provide feedback and input, and draft versions of the proposed updates to the Standards.


Scheduled Meetings

Additional meetings in October are still to be scheduled, as soon as they are this page will be updated with the details. We invite the public to provide input on the slides and recorded webinars contained in the Meeting resources.

  • An additional Webinar Overview and two additional Stakeholder Meetings will be held in October, time and place to be determined

Previous Meeting Resources


Project Timeline

  • Public input period July through October 2018
  • Draft Residential Building Energy Standards and Commercial Building Energy Standards to be available online or by request September 2018
  • Adoption of new Standards and stretch code March 2019 (estimated)
  • New Standards and stretch code effective January 2020 (estimated)

Drafts for Public Input

  • Draft RBES (to be published when draft is complete)
  • Draft CBES (to be published when draft is complete)


The most current versions of the Residential (RBES) and Commercial (CBES) Building Energy Standards became effective March 1, 2015. The current Standards were based on the International Energy Conservation Code (IECC), 2015. The IECC released updated standards earlier in 2018. Vermont statutes require that revisions be made promptly after the issuance of updated standards for residential construction under the IECC. In 2013, the Vermont legislature in Act 89 required the adoption of a stretch code for residential buildings to achieve greater energy savings than the baseline RBES. The Department, in partnership with the Natural Resources Board (NRB), also developed stretch guidelines for commercial buildings. Residential or commercial buildings that comply with the stretch code or guidelines, respectively, are presumed to comply with the energy conservation criterion 9(F) of Act 250. Municipalities have the option to adopt and include the stretch language for either residential or commercial buildings, or both, in the municipality’s land use bylaws.

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