My 70yr old sister has dementia. My brother in law is 74 and not in tip top health himself although is mentally strong. He is finding coping with my sisterscondition very taxing, hallucinations - going missing - paranoia about people coming to do them harm....... Although family try to help as much as possible he is the 24/7 carer obviously. They are still renting the family 3 bed semi from the council. Would they be able to 'exchange' this for a place in a sheltered accommodation unit so that they can be together still?