Excepted from the University of McGill document on queer equity:

A gender-neutral washroom is a single-person facility which is not labelled male or female but rather is available to everyone, no matter what their gender or biological sex. Basically, it is the same type of washroom which everyone has in their home. It can be used by a man, and then a woman, and nobody polices the sex or gender of who enters or exits because the sign on the door clearly indicates that it is available for use by both sexes (not at the same time, obviously!).

Gender-neutral washrooms are an equity issue because many queer and trans persons face discrimination when they enter or exit gender-segregated washrooms. As a result, differently-gendered persons often avoid public washrooms altogether, but the repression of bodily functions can cause physical health problems and emotional distress over the long term. One option for differently-gendered persons is to seek out disabled washrooms since they tend to be gender-neutral. But, because not all disabled washrooms are gender-neutral, this is also an inadequate solution.

The availability of gender-neutral washrooms is also a privacy issue in the broadest sense. Single-person, gender-neutral washrooms provide privacy to any individual who requires it, no matter what his or her reasons, be they physical, religious, personal, or hygenic. Single-person, gender-neutral washrooms provide a private place for Muslims to wash before prayer, allow parents to assist their young children in the washroom, and allow disabled persons to receive aid from opposite-gendered assistants.

Single person, gender-neutral washrooms thus become the best solution to ensure access and to eliminate barriers for all persons, no matter what their gender, physical ability, health status, or shyness.

The best way to ensure equitable treatment of differently-gendered and differently-abled persons would be the renovation of current facilities on campus in order to provide at least one gender-neutral washroom in every current building, and ideally one on every floor of every newly-constructed building.