Getting a mortgage today is a business. It’s impossible to ask for a loan if you do not have a permanent contract and also a substantial initial capital because today the banks provide financing for up to 60% of the value of the property. Forget the 80 or 100%. To make matters worse there were requests for more collateral like having a steady job and they will also demand a guarantee plus the increase in the spread which means the banks profit on Euribor or other references rate. In some cases you pay 5% more.
Strange to say but if you have a mortgage the situation is much better since interest rates are at historic lows. So be careful with banks that offer you to switch to a fixed rate to protect yourself from any future fluctuations in the market which in theory could lead to a rate at unsustainable levels. But you would much more likely find it a disadvantage. With all likelihood you would be to pay a spread much higher than that paid today.
Let me explain with an example. If you have taken out a mortgage variable before the middle of 2011 and the reference interest rate is 1%, you will not pay more than 2%. If you went over to a fixed rate mortgage the spread will increase exponentially so rates unchanged would leave you with a rate of 4% or more. The change may be convenient only in the presence of a sharp rise in interest rates unlikely to occur in the coming years.