Is sharing the same building, but operating in separate units from external vendors considered co-location? Would sharing the premises with another licensee be considered co-location?
It is considered co-location if the external vendor is a non-licensable healthcare service (e.g., Childcare Centre) operating within the licensed premises of a licensable healthcare service (e.g., Nursing Home). The licensed premises is the address stated on the licence of the licensable healthcare service.
If the services are sharing a space that does not belong to any licensable healthcare service (e.g., licensee and external vendor are located in different units of the same building), it is not considered co-location.
You may refer to the graphic below for further clarification on the co-location requirements:

In the situation where the external vendor is a licensable healthcare service operating within the premises of another licensable healthcare service (e.g., a radiological service licensee operating in a Nursing Home (NH)), this is not considered co-location as this is simply two licensees sharing the same location.