<prompt> Human: So me and my buddy are moving into a house that Im buying. Everythings going to be in my name but were splitting the mortgage, Basically hes playing rent. So were trying to decide how to do it fairly as far as when I sell the house. I plan to sell it or rent it out in 3ish years when I move. So would it be more fair for us to document any expenses that he paid towards improving the house ie. helping build a back porch or something that will increase the value of the house. And paying him back what he put in or for us to spilt what profit if I make profit I make from selling the house. Were really good friends and were just trying to make it as fair as possible.  <response>: Basically hes playing rentStick with this. You put up the equity, took the risk. But he shouldnt be expected to pay above market rent. If he helps build a deck etc.. you should consider the value of his labor. If you pay him directly for his labor it qualifies as a home improvement expense.Considering this as splitting the mortgage may lead to trouble down the line... 