"Travis Jordan" writes:
If your home is really a condo, then you don't own the interior wall and
the best you can do is to cover the surface of the outlet. If it were
me I'd involve the condo board and ask them to seal up the leaky walls
anywhere they exist.

Not true in our neck of the woods. Here traditionally, the individual
owns from the studs in -- i.e. studs are common space.
Also, the actual public vs. private ownership should be the detailed
in the condo docs.