Putting the money in a house deposit would only make sense if the value of the home bought or the deposit sitting there increased by over 6% a year guaranteed.
PlanDeRaccordement - Please explain how they would buy the house in the first place, if all the money has been used in place of loans? Not everyone has BOMD! How long would it take them to save the same amount, for a deposit, from the savings they make from not repaying the loans.
Eg inheritance of 60k, all used for uni, so nothing saved towards a deposit.
Assuming a salary of 30k, then they are saving loan repayments of about £450 a yr (9% of amount over 25k, not sure if that is exactly correct). Assuming that they have little or no other disposable income, as they are in expensive rented property, then it would take 133yrs to save 60k from £450 a year. Even with salary increases over time, unless they are in London/high flyer, it will still take many years to save that 60k.
Many people, including graduates, struggle to save a deposit as they pay high rent, when the irony is, if they had the deposit, a mortgage is often cheaper than rent. It is often the lack of a deposit which prevents people buying, rather than inability to get a mortgage. Unfortunately the days of 100% mortgages (as mine was 34yrs ago, 2* my salary) are long gone.
It would be interesting to hear from any graduates of say 30, who were in this situation at 18, not now in a high flying job, and with no BOMD, to see what they recommend.