<prompt> Human: I just bought a house and my three current roommates are moving in with me. How much should I charge them for rent? I want to be fair to them as theyre my friends but I also want to make sure Im covering myself for expenses and not under-renting it. My mortgage is 712mo.The place we lived at before was 1150mo so we payed 287.5 utilities. I am thinking of charging 300 utilities. Possibly irrelevant information: One of the roommates is my sister. Were all younger. Im 20yrs old, theyre 23. The house is roughly 24yrs old with newer furnacehot water heaterroof.EDIT: Spelling.  <response>: Go on Craigslist and find out what rooms are renting for in your area. Charge that and call it a day. 