House cost: $200,000
Down Payment: $10,000 (5%)
(Time passes...)
Value at foreclosure: $200,000 (no price change)
EDIT: I changed the math on this a few times, updating to reflect that you indeed get your downpayment back (minus fees).
The bank sells the house for $200,000. You get your $10,000 back after paying the $190,000 mortgage balance. But you're not on the hook for anything. You walk away with only a hit to your credit. You went from owing the bank $190,000 to owing $0 and having $10,000 in your pocket.
House cost: $200,000
Down Payment: $10,000 (5%)
(Time passes...)
Value at foreclosure: $100,000 (massive change)
The bank sells the house for $100,000. You don't get your $10,000 back. But you're not on the hook for anything. You walk away minus $10,000 (i.e. 1x) and a hit to your credit. You went from owing the bank $190,000 to owing $0.
right but in this case the house value never changed, so there was never any loss. Suppose the house value went down 5%, then you'd be totally wiped out (ie. you lose your entire deposit).
There is however a floor so the payout profile is a lot more like an option.