Fewer coming round notice tenants (7)
I believe the answer is:
lessees
'tenants' is the definition.
(lessee is a kind of tenant)
'fewer coming round notice' is the wordplay.
'fewer' becomes 'less' ('less' is associated in meaning with 'fewer').
'coming round' says the letters should be written in reverse.
'notice' becomes 'see' (I've seen this before).
'see' reversed gives 'ees'.
'less'+'ees'='LESSEES'
(Other definitions for lessees that I've seen before include "rent payers" , "People renting" .)