<prompt> Human: If Im living in a 1,200 sq ft house thats 3Bed2Bath. Is there a good rule of thumb based on percentage of a mortgage if I want to rent out the other 2 rooms? As Im the homeowner I would pay a larger since its my house. Would 70-30 be reasonable with 30 being 15 per person?I would assume that we would split utilities evenly.  <response>: It shouldnt be based on your mortgage at all. It should be based on what rooms rent for in your area. 