To me, it's a little house (4)
I believe the answer is:
home
'house' is the definition.
(I know that house can be written as home)
'to me it's a little' is the wordplay.
'to me' becomes 'hom' (I can't explain this - if you can you should believe this answer much more).
'it's' becomes 'e's' ('e' can mean 'electronic' which is similar to 'IT').
'a little' means to remove the last letter (the word is not quite complete).
'es' with its final letter removed is 'e'.
'hom'+'e'='HOME'
Can you help me to learn more?
(Other definitions for home that I've seen before include "domestic" , "Be it ever so humble, there's no place like it" , "In; institution" , "and 23: Host side" , "Place of dwelling" .)