Should I include shared space when determining the percentage of property rented?

[socaljulia]

I rent out a studio located on my primary residence that I reside in.  Should I include shared space when determining the percentage of property rented?

[Critter-3]

NO ... only the exclusive use footage can be used.  

[Carl]

The percentage of space rented is that space which is exclusive to the renter. Typically, this will be the bedroom. If you live in a house with 2 or more baths and one of those baths is only accessible from the room that is being rented, then that bath is also exclusive to the renter and may/should be included in the percentage of space that is exclusive to the renter.