Condo, for one (4)
I believe the answer is:
unit
This clue is a double definition.
'condo' is the first definition.
(I've seen this in another clue)
'for one' is the second definition.
(synonyms)
(Other definitions for unit that I've seen before include "hospital department" , "Standard for measuring" , "A considerable number of soldiers" , "Individual thing, single and complete" , "Building block - small military force" .)