@sashagabadon
I don’t see the financial risk? You will own 60% of an expensive house. That’ll remain the same even if prices drop a bit so you’ll easily be able to downsize later.
I think of interest only like renting but without the threat of being turfed out by private landlord with 2 months notice.
Interest rates going up are a risk so a long fix is sensible
No the 60% is at risk.
The bank get their money back (the 1.3 loan) and the home owners take 100% of the market gain or devaluation.
new home
1.95m your house value
1.30m loan interest only
3.25m current market value.
Loan 20 years
At a minimum you want to keep current living standard of housing.
To meet the 1.3m loan over 20 years savings of £5,417pm are needed to pay the capital.
Other cost are 2 set of legal and move costs.
Interest of £1,500pm is "cost of living" in nicer area or rental payment on borrowed money.
But if MV goes up £18,000pa you "recover" the cost
So to stay in the home the year of loan falls due (2042) you need to pay back 1.3m
The plan, you to sell the house buy a new one.
MV+/-0%
Sale at 3.25m
1.3 to bank + 1.95 equity + (no +gain/ no -loss)
no extra money for your new house
YHV 1.95m as Cash buyer 1.95m
= Buy same house
MV+50%
Sale at 4.875m
1.3 to bank + 1.95 equity + (1.625 gain)
You keep the gain along with your equity.
YHV 2.925m as Cash buyer 3.575m = buy 'better' house
MV -20%
Sale at 2.6m
1.3 to bank + 1.95 equity + (-0.65 loss)
You pay 0.65m to bank from your equity
YHV 1.56m as Cash buyer 1.3m = buy a 'worse' house
If the market drops you need to sell asap
So if the MV remains the same the question would be what rise in interest rate would force you to sell the house.