My low income mom was asked to move in w/a 95 y/o rent free in her home in exchange for cooking, driving to doctor appts, being a companion, etc. She shares utility costs & food costs at a monthly cost to her of about $500-$600 a month. Her social security payment is $1400/month and she still has about $500/mo in other costs (car pmt, insurance) and misc bills. Though she does not pay rent, she is paying more in fiod & utilities sharing a big house than she did when on her own. She is currently waiting for section 8 to come thru.