Is a single mother's family status a factor in the refusal of an application to rent an apartment?

In Cunanan v. Boolean Developments Ltd., supra, a 54-year-old single mother of three sons applied to rent an apartment and the superintendent of the building told her that her application would likely be rejected because she had three teenaged children. After hearing nothing from the superintendent for six weeks, the complainant went to see the owner of the building and was told that her application had been misplaced. The complainant inferred from the lost application that her family status was the actual reason as to why she had not received a response from the respondent.