Pack member’s place to live in Home Counties (5)
I believe the answer is:
spade
'pack member's' is the definition.
(part of a pack of cards)
'place to live in home counties' is the wordplay.
'place to live' becomes 'pad' (pad can mean someone's home).
'in' indicates putting letters inside.
'home counties' becomes 'SE' (Home Counties in the South East of England).
'pad' put into 'se' is 'SPADE'.
(Other definitions for spade that I've seen before include "Fictional detective" , "one of thirteen?" , "Black leaf-shaped symbol on playing card" , "black suit" , "Digging tool" .)