Taking out loans on your own property, what can happen?

[Grant]

If you take out a loan on your property, where the property is collateral if you don't pay the debts off in time, what happens if you don't pay the debt in time? Do they come for your house right away? Do they give you a timeframe of when you need to make sure all is paid? Do they give you any timeframe of when they would plan to take your property? I hope to never have to put a loan on my house, but if I do, I'd like to know what I'd be in for.