These are Fanmail address.... Not their home address. Either one works fine:)

William Morris Agency

Dylan and Cole Sprouse
One William Morris Place
Beverly Hills, CA 90212

Hollywood Center Studios

Suite Life on Deck
C/O Dylan and Cole Sprouse
1040 N. Las Palmas
Bldg. 33, 3rd Floor
Hollywood, CA 90038
USA

Disney

Dylan and Cole Sprouse
C/O Suite Life on Deck
Disney Channel
3800 W, Akaneda Ave.
Burbank, CA 91505

Dualstar

Dylan and Cole Sprouse
Dualstar Entertainment Group LLC
3760 Robertson Blvd.
2nd Floor
Culver City, CA 90232