i guess i'm asking as a relative wants to enter the market and i wonder if it could get tougher for him to make replayments as another relative will probably go as guarantor or somehow help him enter the market and i dont want them both to crash.
Regardless of a financial crash, the ability to repay your loans rests solely with you.
If the next GFC means your relative might lose their job, then yes it will be tougher for them.
In my opinion everyone should be investing with the attitude that there might be another GFC tomorrow, and borrow accordingly, and select their investments accordingly.
Many will scoff at this and say take a mouthful of concrete and harden the fark up, but no-one ever went broke by being able to make their loan repayments in business or investing.
two things will happen for sure in the next GFC -
1. There will be lots of distressed sellers like there always are. This will have an affect on prices, but not everywhere and not at every price point.
2. The lenders will make it tougher to borrow, which means less buyers, which means less demand, which means lower prices, or stagnation.
So, the cup half full view is that the properties will be relatively cheap for those who can access finance to buy them.
Just don't be a seller during the next one.
GFC = straw hats in winter, kids.