Parliament sits at the Parliament Palace, in the city of Barcelona. However, it may also sit at other locations in Catalonia.

The Saló de Sessions, or Assembly Hall, is where the Plenary Assembly of the Parliament of Catalonia usually sits. The Members of Parliament, in Parliamentary groups, are seated in their seats forming a semicircle - half a circumference split by an aisle - in front of the Presiding Committee. Members' seats are usually referred to as "benches", because in former parliaments they did actually used to sit on benches.

The committee rooms are smaller than the Assembly Hall. Some rooms have seats like those in the Assembly Hall, while others have a single, square table.