I want to build a deck that will be on the back side of my house coming from my 3rd bedroom window. It will be on the roof and come out over part of the back patio. Do I need any type of permit to do this?? A bunch of my neighbors have done this. I found this thread below regarding roof decks, but it is pretty old (2004). I figure the contractors I contact would know this information.

http://www.phillyblog.com/philly/gen...on-permit.html