It refers to credit secured by a mortgage on real estate, granted for the following purposes: 

➤⠀viability of a land;

➤⠀rehabilitation, modernisation, consolidation or extension of a building;

➤⠀ obtaining or retaining ownership rights in real estate.

❗⠀If you're thinking of taking a credit:

➤⠀you can calculate your monthly instalments online in the BT credit simulator;

➤⠀and then find out over the phone if you qualify for the desired amount. 😃