The REINZ disclose the 'days-to-sell' period when they publish the monthly median house value, and volumes sold.

Care should be taken with this 'days-to-sell' data, as it is almost always the 'days-to-sell-by-the-selling-agent', and may not be the same as the total time a median house has been listed for sale.

Especially in times of a slow market, vendors may switch from one one agent to another, or more, until a sale is finally achieved.