As long as interest rates are low in this 2.5 - 3% range, there will be no bubble bursting. At worst, prices stabilize.
What will kill prices is if some reason interest rates skyrocket to 5, 6, 10+% like the 80s. In that case that $500k mortgage at 3% ($15k/yr interest... excluding payments for principle pay off) which is manageable turns into $25k, $30k, $50k interest per year. That is not affordable for most people unless someone or a couple makes tons of money. If that happens, suddenly people can't afford mnthly payments and then they dump and move to something cheaper. Prices have increased a lot i 10 years, so even a spike back to 6% like around 2006 would be killer for many people.
As long as there's demand, low interest rates and wages that are stable, prices will rise and eventually stabilize.
The whole housing bubble has been promoted for 10+ years. Anyone who got influenced by fearmongers (all those banking analysts and mortgage brokers trying to sell or convert your mortgage) has lost big time. The best bet has beern a variable rate which for at least 10 years has had a better rate than fixed terms by probably at least 0.50%. My variable rate is about 2% for 5 years. Anyone who's paid fixed term rates has lost out on probably paying $10,000+ of extra interest charges in the past 10 years for nothing. While I've paid 2-3% variable rate for a long time, people I know locking in at fixed rates are paying around 4% since they locked in years ago before all these new 2.5% or 3% fixed terms came about. So unfortunately for them, they're paying a solid 1% more per year which can be big money if their mortgage is $200-300k. Every year is another $2-3k in extra interest they are paying. Ouch.
It's been so long, I can't remember the last time (if ever) a fixed rate was better than a variable rate.
If I remember correctly, GTA and most major Canadian metros have growing populations. So as long as there's demand, prices will increase. Most new developments are cramped townhouses and condos, which helps the price of large family homes as the demand for them is high, but hardly any new developments are big homes. So that just makes existing family homes hike up in prices even more.