So gets a little house in London (4)
I believe the answer is:
soho
'in london' is the definition.
(area of London)
'so gets a little house' is the wordplay.
'so' becomes 'soo' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'gets' is an insertion indicator (gets can mean captures or absorbs).
'a little' suggests taking the first letters.
The first letter of 'house' is 'h'.
'soo' placed around 'h' is 'SOHO'.
Can you help me to learn more?
(Other definitions for soho that I've seen before include "fashionable neighbourhood (or neighborhood)" , "Central London entertainment district" , "Theatre and night-life district of London" , "Central London night life district" , "Central London entertainment area" .)