No. Lenders read your credit report, and utility bills in your name are not part of a standard loan approval. Your qualifying credit comes from the report itself, so living with family and having no household bills in your name is not a problem by itself. The real risk is letting your credit go completely quiet. With nothing active, the scoring models eventually have little current data to work with, and your score can go stale or drop off entirely. Keep at least one account alive and paid, even something small like a cell phone bill or a single credit card used lightly. One nuance on cards: rather than always paying to a zero balance before the statement cuts, letting a small balance report, under roughly 10 percent of the limit, and then paying it can read better to the scoring models than a card that looks dormant. A minor optimization, but it keeps a thin file healthy while you are between having bills in your own name. If buying is on the horizon, a quick credit check with a lender will confirm your file has enough active history to score cleanly.