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BC Building Code 2024: Climate Zone 4 has expanded

BC Building Code 2024: Climate Zone 4 has expanded

As of March 8, 2024, British Columbia ushered in the latest edition of the BC Building Code, marking another milestone in the province’s commitment to safety, efficiency, and sustainability in construction. While the core technical requirements for the BC Energy Step Code and Zero Carbon Step Code remain unchanged, there are notable adjustments that builders and stakeholders need to be aware of.

One significant update revolves around the reclassification of climate zones across the province. Previously designated as part of Climate Zone 5, several communities now find themselves realigned into Climate Zone 4.

The following communities that were in Climate Zone 5 are now in Climate Zone 4: 

  • Comox
  • Courtenay
  • Hope
  • Ladysmith
  • Nanaimo
  • Parksville
  • Qualicum Beach 

This shift reflects a refinement aimed at better aligning with climatic values outlined in the National Building Code of Canada.

For those seeking detailed insights, Table C-2 of Division B, Appendix C within the BC Building Code 2024 provides comprehensive information on these alterations. Moreover, it’s essential to recognize that local governments retain the flexibility to adopt climatic values tailored to their specific regions, ensuring that construction practices remain finely attuned to local conditions.


While the adjustment to climate zones stands out as a significant change, it’s essential for builders and industry professionals to explore further revisions within the BC Building Code 2024. The BC Codes homepage serves as a valuable repository, offering a wealth of information on all updates and revisions, empowering stakeholders to remain current with the latest developments shaping construction practices in British Columbia.

In navigating the complexities of modern construction, staying informed and adaptable is paramount. The BC Building Code 2024 edition underscores the province’s steadfast commitment to fostering a built environment that prioritizes safety, sustainability, and resilience. By embracing these changes and harnessing the wealth of resources available, we can collectively elevate construction standards while safeguarding our communities for generations to come.

In essence, the BC Building Code 2024 edition represents not merely a regulatory update, but a testament to the province’s ongoing dedication to innovation and excellence in the construction industry. Let us seize the opportunities it presents to construct a future that is not only structurally sound but also environmentally responsible and socially inclusive.

Enerma BC energy advisor