The bank assesses the risk of your application. The riskier the loan, the longer it will take to get a response.
It asks you for a guarantee on the property purchased on credit. The purpose of this guarantee is to protect the lending institution against credit risks.
If the borrower fails to repay all or part of the loan, the bank can draw on this guarantee to recover what remains of the sum due.
There are different forms of guarantees whose surety bond which will be explained to you by your adviser depending on the type of case you have.