NECB update
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Thank you for subscribing to updates related to the National Energy Code of Canada for Buildings (NECB) and Section 9.36 of the Alberta Building Code (ABC), both of which come into force on Nov. 1, 2016. These notifications will provide technical code interpretations, and aim to inform those who design and construct buildings in Calgary.

These updates will also be available on our website at and

Code article
NECB Div. A- Application of this code
Except as provided in Sentence (2), this code applies to the design and construction of all new buildings described in Sentence of Division A of the NECB and to additions.

Previous direction
Current direction
The NECB applies to all new buildings and additions, where addition is defined per NECB Division A- This definition includes all new conditioned space that increases the building’s floor surface area by more than 10 m². This may take the form of additional storeys, increases to building footprint, infilling of existing atrium spaces or mezzanine areas.

For additions that increase building height or building area, there are multiple options available to the consultant to demonstrate NECB compliance. These generally do not require upgrades to the existing building systems unless the consultant team wants to use addition and existing building options as found in the respective related articles below. These additions will typically need to demonstrate compliance with all parts of the NECB.

Mezzanines and new floor area wholly contained within the existing building envelope may not substantially impact the existing building systems. In this case, the addition would require new lighting and mechanical subsystem(s) to meet the NECB for new floor areas only. Therefore, a typical mezzanine or infill atria addition needs to only demonstrate compliance for new lighting and mechanical subsystems that serve the addition (new floor area).

Related articles
NECB Division A

Effective date
Dec. 1, 2016
Note: The interpretation above represents a consensus interpretation of the NECB document as it applies to most foreseeable applications and situations. It is intended to provide clarity and guidance, but may not be applicable to every condition found in individual projects. For highly irregular or case-specific interpretation, please contact:

Justin Pockar, Energy and Environmental Coordinator
The City of Calgary
Copyright © 2016, The City of Calgary, Planning & Development, All rights reserved.

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