May I add a comment on security gates. We have had a break in one of the 8 apparts. in Calis. The ease which was used to break in, I can't believe, the target was a double ornate security gate, the lock was forced, hardly any paint chipped, then a screw driver was used to force open double glazed door. These gates have a lock which stands proud, unlike the other gates that other owners have fitted, which are flush & also double locked. May I suggest you either have flush locks or chain & padlock those that haven't. Hope this helps on buying or preventing a break in. Elaine