What does Dubbel gemengd mean?

In their dubbel gemengd house, members of four different associations lived together.

Dutch student slang. This is a Dutch word. You will hear it a lot at Dutch universities, student associations and in student houses.

Some Dutch student houses only mix on gender, or only on association. Dubbel gemengd mixes both. It is just one of the many types of houses you find in a Dutch student city. When you go house hunting, the ad usually says which type it is. Also read about studentenhuis, huisjongste and extern.