The exorbitantly-expensive city of Toronto continues to move up in Demographia's annual ranking of the most unaffordable housing markets on earth, a new report from the global analysis firm shows.

Rising four spots over last year's 10th place tie, Toronto now boasts the sixth least affordable housing market out of 309 major cities worldwide.

Hong Kong remains the most expensive city in which to live as of 2020, according to the 16th Annual Demographia International Housing Affordability Survey, while Vancouver and Sydney similarly reprise their roles from last year's ranking in second and third place.

Los Angeles and Melbourne are the only other cities in which it is more expensive to live right now than Toronto, according to the ranking, which shows Toronto and Auckland as tied this year.

This means that Toronto's housing market is now less affordable than the notoriously pricey housing markets of London, San Francisco and Silicon Valley.

Many people have studied and argued over why this may be the case, but how Demographia came to its conclusion is easy to explain: The annual affordability ranking is determined using the Median Multiple ratio.

Widely considered to be the international standard for comparing housing affordability across multiple markets, the number is simply a country's median house price divided by its median household income.

"Toronto... has severely unaffordable housing, with its Median Multiple deteriorating to 8.6 from 8.3 in 2018 and 3.9 in 2004," reads Demographia's freshly-released 2020 ranking.

"The 2019 UBS Global Real Estate Bubble Index rates Toronto as having the second worst housing "bubble risk" in the world (after Munich)," it continues. "Worse than least affordable Hong Kong and second least affordable Vancouver."

Demographia explains that luxury home prices have beome slightly less volatile in Ontario since the introduction of a foreign buyer's tax in 2017, but cautions that affordability in Toronto continues to deteriorate at the middle of the market.

"In both Vancouver and Toronto, affording the least expensive housing, apartment condominiums, is considerably above the Canada Mortgage and Housing Corporation 30 percent housing affordability guideline," notes the analysis firm.

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