...Southeastern* BC is really the only section of this vast, wealthy and rapidly growing country that have [more or less] year-round non-freezing weather...
And this is the factor that will likely continue to keep upward pressure on local housing prices even if all other conditions were to suggest the opposite. Victoria (and the CRD) is essentially Canada's Miami Beach or Phoenix. It will always be attractive due to our climate and proximity to so many outdoor activities than can be enjoyed nearly year-round.
* Presumably you meant southwestern, the East Koontenays not being especially balmy at least 1/3 of each year.