We're very early in the code development process with respect to determining what an energy code for existing buildings would look like. That process is finally approved by the Canadian Commission on Building and Fire Codes through consultation with provinces and territories, and industry.
The stringency of that code, when it would apply—whether it's at time of sale or at the point of some major renovation—still needs to be determined. I think the point here is that the process for determining what that code will look like and how it will apply is consensus-based. It draws from experts from across the country, and it is done through a full public review and consultation.
Whether it would apply to everyone at the point of renovation depends on how the provinces and the territories adopt it, or whether they adapt it as well. However, because we are at a very early stage, many of those major points still need to be determined.