Allowing or leasing (7)
I believe the answer is:
letting
This clue is a double definition.
'allowing' is the first definition.
('let' can be a synonym of 'allow')
'leasing' is the second definition.
('let' can be a synonym of 'lease')
(Other definitions for letting that I've seen before include "Leasing (a property)" , "Giving permission to" , "Granting to a tenant" , "Dealing with property" , "Allowing or leasing" .)