Lefties admit conflict pays (7)
I believe the answer is:
rewards
'pays' is the definition.
The definition and answer can be both related to property as well as being plural nouns.
Perhaps you can see an association between them that I can't see?
'lefties admit conflict' is the wordplay.
'lefties' becomes 'reds' (red can mean a left-wing person).
'admit' means one lot of letters goes inside another.
'conflict' becomes 'war' (war is a kind of conflict).
'reds' enclosing 'war' is 'REWARDS'.
Can you help me to learn more?
(Other definitions for rewards that I've seen before include "Prizes or remunerations" , "Gifts of appreciation" , "They're given in recognition of merit or service" , "Gifts given in acknowledgement of behaviour or merits" , "Benefits" .)