ColeenD3
Expert Alumni

Investors & landlords

As mentioned above, it is not 50/50. Any space that is available to you both is your personal portion. Only "her room" and possilby her bathroom is the business portion, assuming it is not open to use by you.

Originally in my response, I improperly assumed it was 50/50 based on the "two of 4 rooms". I did not probe further to see exactly what the shared space was.