House Hacking vs fully rented

[Kevin Donaghue]

How do the numbers differ for house hacking vs having a property that is fully rented. For example, If you CoC on a property would be say 10% if both sides of a double are rented, how should the numbers work out to make sense if the owner is living in half? Would all the expense need to be covered for the property or would just the mortgage being covered make sense.

I understand the financials if a property is fully rented out but if living in half, what should one look for?