<prompt> Human: My grandmother has moved into long term care, and her house is now empty. She has enough money so we dont need to sell it yet. The mortgage has been completely paid off. I am thinking of moving into the basement with one bedroom, kitchen, family room, bathroom, plus the only laundry room in the house so that would be shared. My brother and his girlfriend would take the main floor of the bungalow which has one bathroom, kitchen, family room, dining room 3 bedrooms. Since the house has been paid for, we wouldnt be paying any rent.All wed pay for is internet no phone or tv, gas, water, heating, electricity, etc. How should we split these costs? I think it should be 333333 but my parents are thinking 50me2525, which I dont think is fair - if we were paying rent then sure because I would have one floor and they would have the other. I havent asked my brother what he thinks yet, but was wondering what the general concensus would be. Thanks.  <response>: Everyone uses presumably the same amount of the utilities, so each person should pay the same amount. Just divide it by three and be done with it. I would be surprised if your brother had a problem with that. 