The figure has more than doubled since 2005 when the CML reported 38% of first-time buyers relied on the bank of mum and dad.
In January 2011 the CML reported that 47% of properties bought by first-buyers were also purchased with a joint income whether that be a couple or with a friend.
Steve Reid, retail director for Clydesdale Bank, said: “It is becoming increasingly commonplace for first-time buyers to require financial help from their parents when buying their first home.
“At Clydesdale and Yorkshire Banks, we recognise that first-time buyers are vital to keeping the property market moving and are committed to helping them with our range of competitive products.”