People look at advertisements displayed at a property agency in Hong Kong on May 31, 2020. (ROY LIU / BLOOMBERG)

Hong Kong remained the world’s least affordable housing market for the 11th year, underscoring the income disparity in the financial city.

The Asian hub topped Vancouver, Sydney and Auckland as the most unaffordable residential market in the world last year, according to a report published by think tanks Urban Reform Institute and Frontier Centre for Public Policy. Hong Kong’s median property price dropped slightly to 20.7 times its median household income in 2020, from 20.8 times the year prior.

Apart from Hong Kong, the other cities ranked in the top 10 saw affordability deteriorate from the year before as the pandemic exacerbated the wealth gap

ALSO READ: HK is ‘least affordable housing market’ for 10th year running

A combination of declining income and escalating property prices during 2020 prompted affordability to worsen in most cities. Apart from Hong Kong, the other cities ranked in the top 10 saw affordability deteriorate from the year before as the pandemic exacerbated the wealth gap.

Vancouver kept its second position with the median property value rising to 13 times household income, compared with 11.9 in 2019. Sydney remained the third-most unaffordable housing market, followed by Auckland, which jumped from sixth place the year before.

An influx of new buyers, especially in the suburbs, sent prices escalating in many of these cities. Many low-income and middle-income households who already have suffered the worst consequences from housing inflation could see their standard of living further decline, according to the report.

“The deterioration in housing affordability represents an existential threat to the middle-income households,” reads the report. “Much of the already greater inequality that has developed in recent decades is attributable to rising housing costs.”

The research covered 92 metropolitan areas in eight countries, including the US, Australia and Canada, with data from the third quarter of 2020.

READ MORE: World's least-affordable housing market to get densest apartments