The transition period for the National Building Code - 2019 Alberta Edition, the National Fire Code - 2019 Alberta Edition, and the National Energy Code for Buildings 2017 ends on December 1, 2019.
As of June 1, 2019, the following transition conditions apply:
1. If building construction is in progress with a valid permit issued under the 2014 code edition or previous codes by the authority having jurisdiction, construction is allowed to proceed under the code in force at the time of construction. Unless an unsafe condition exists in the opinion of the authority having jurisdiction, construction in progress is not required to be updated to the 2019 building and fire code provisions or to the 2017 NECB.
2. Construction may continue under the 2014 code editions if the authority having jurisdiction received the building permit application prior to December 1, 2019. A person may choose to construct to the 2019 code editions at any time after June 1, 2019 or earlier if the authority having jurisdiction is administratively capable to allow it.
You can access resources detailing changes to the codes via the National Research Council of Canada and the Safety Codes Council.