I dont see how a washer and dryer would even fit in the closet area but our 2013 31SL has electrical outlets in the closet and the water lines are located under a carpeted area on the left side front of closet. The left closet door wont open all the way because of the covered water lines. Once uncovered you would have to install your own water hook up box for a washer..
Rick and Mindy
2013 Redwood 31SL, 2011 Ford F350 SRW, 6.7, Crew Cab with Firestone Bags, Titan Disc Brakes