Judge and I am occupying large country residence (8)
I believe the answer is:
estimate
'judge' is the definition.
(I know that judge can be written as estimate)
'i am occupying large country residence' is the wordplay.
'i am' becomes 'I'm' (contraction).
'occupying' indicates putting letters inside (inserted letters occupy or enter the word).
'large country residence' becomes 'estate' (as in a country estate).
'im' inserted into 'estate' is 'ESTIMATE'.
'and' acts as a link.
(Other definitions for estimate that I've seen before include "Calculate roughly" , "Calculate - valuation" , "Make approximate judgement of size or amount" , "Judge the approximate value" , "Believe" .)