Bank conditions for dual use

Hi,

My question is what are the mortgage conditions for a house with dual use.

  • the house has 2 appartments.
  • One would be used as the owners primary home. Around 120sqm
  • The second would be let. 80sqm

Is it true that no 2nd, nor 3rd pillar money can be used? Because the whole project is considered an investment property?

I’m getting conflicting information online regarding This topic.

Thanks for the help.