DLP offers housing to cast members who live too far to commute every day. There are 2 residences: La Boiserie in Magny-Le-Hongre and Les Pleïades in Serris. Both are close to the parks and can be accessed by bus. Les Pleïades offers studios for 2 and La Boiserie offers apartments for 4 or 6 people. You have to share your room with an other cast member. It is a good service Disney offers so you can search for your own place in the mean time. Lodging is expensive in the neighborhood, though. If your rent is high, you can always apply for help from the government, but once you're 25, you don't receive much if anything.
There used to be a third residence called La Louisiane in Bailly-Romainvilliers, but it no longer is. Not sure what happened here, but rumors are DLP will close the other two as well.