Taxi not out of small house (5)
I believe the answer is:
cabin
'small house' is the definition.
(I've seen this before)
'taxi not out' is the wordplay.
'taxi' becomes 'cab' (synonyms).
'not out' becomes 'in' ('in' is the opposite to 'out').
'cab'+'in'='CABIN'
'of' is the link.
(Other definitions for cabin that I've seen before include "Hamper" , "Building" , "modest accommodation" , "Marine digs" , "Lodge or hut" .)