Judge I'm in the centre of the property (8)
I believe the answer is:
estimate
'judge' is the definition.
(I know that judge can be written as estimate)
'i'm in the centre of the property' is the wordplay.
'in the' indicates putting letters inside.
'centre of the property' becomes 'estate' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'im' placed inside 'estate' is 'ESTIMATE'.
Can you help me to learn more?
(Other definitions for estimate that I've seen before include "Calculate in approximate way" , "Believe" , "Calculate roughly" , "Judge the worth of" , "Form opinion of - tea times (anag)" .)