A third of the banks’ first-time buyers fell into the under-25 age category with a further 32% aged between 26 and 30 and 16% in the 31 to 35 age group.
Some 9% were between 36 and 40 years old and 11% were over 41.
The average house price paid by their customers increased from £104,021 for those under 25 through to £240,709 for those aged between 31 and 35. It subsequently fell to £202,987 and £214,892 for the 36 to 40 and over 41 age groups respectively.
Steve Reid, retail director for Clydesdale Bank, said: “We remain committed to supporting first-time buyers and have a range of competitive products to help them throughout the process.
“We also remain one of the few lenders who still offer a 95% LTV mortgage for first time buyers.
“We are proud that we are helping buyers of all ages to buy their dream home and take their first step on the property ladder.”