It's the transposition of taxes (6)
I believe the answer is:
tithes
'taxes' is the definition.
The definition and answer can be both related to property as well as being plural nouns.
Maybe you can see an association between them that I don't see?
'it's the transposition' is the wordplay.
'transposition' is an anagram indicator.
'its'+'the'='itsthe'
'itsthe' with letters rearranged gives 'TITHES'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for tithes that I've seen before include "Tenths of income given to church" , "Levies of one tenth" , "Tenth parts, levied by a church perhaps" , "Levies of one-tenth, to church perhaps" , "Tenths of income once paid to church" .)