Not hard cash? (4,5)
I believe the answer is:
easy money
'not hard cash?' is the definition.
The definition and answer can be both related to property as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'not hard cash?' is the wordplay.
'not hard' becomes 'easy' ('easy' is the opposite to 'hard').
'cash?' becomes 'money' (cash is a type of money).
'easy'+'money'='EASY MONEY'
Can you help me to learn more?
(Other definitions for easy money that I've seen before include "scam" , "Quick buck" , "return without difficulty" , "Cash obtained with little effort" , "effortless gain" .)