Sven: Your apt??, NEW?? YES!!
We had a property mgt co that we "started" doing work for... the "boss lady" said "re-use the existing devices, plates & cable".
My crew called me, told me the story. I called the lady and said "NO WAY". Needless to say, we don't work for them any more; finished the first "job" and never hard from them again. The EC that came in after us has a collection of red stickers on the doors of the office building. (Inproper cabling for use of premises; undersize boxes, etc.) The PM Co.'s idea of demo was to sawsall a partition wall at the top & bottom plates, "move" it to the new location, shoot it back down & up, and patch & spackle the holes.
Don't need that type of work.
Old "crap" is tossed out!!