Landed property in east, say (6)
I believe the answer is:
estate
'landed property' is the definition.
(I've seen this before)
'east say' is the wordplay.
'east' becomes 'e' ('E' can be a synonym of 'east').
'say' becomes 'state' ('state' can be a synonym of 'say').
'e'+'state'='ESTATE'
'in' acts as a link.
(Other definitions for estate that I've seen before include "One's property after death" , "Amount of land - type of car" , "Property - may go with rank" , "Rank - housing development - what's left in a will" , "Land with buildings" .)