2 children left the family home after both parents have passed on. One wants to buy the other person out so need a mortgage for 50%. Do they need 10% of the house as they’ll be first time buyer. Is it 10% off the mortgage or house value? Would lenders be a little flexible if only need 40/45% depending what deposit is required. House is furnished etc so nothing needs to be bought. They could rent a room out as they’ve no children or partner to help cover the majority of mortgage