Tan Mei Xi/Vancouver Coop Radio - A single-family home may be our current vision of ideal housing but that picture is no longer realistic, says housing advocate Bruce Haden.

The non-profit organisation Urbanarium, of which Haden is a board member, recently released a report promoting 'Missing Middle' housing as one of the solutions to Vancouver's housing crisis. The report uses the term 'Missing Middle' to refer to multi-family housing types denser than duplexes and smaller in scale than condominium buildings.

"We live in a planetary environmental crisis... and all of us will have to contribute to solving that catastrophe," said Haden.

"One of the villains of the planetary crisis is the single-family house. It's a tough thing to say, but it's the reality... It's the most environmentally expensive way to house people."