Compliant, as one’s landlord will be (13)
I believe the answer is:
accommodating
This clue is a double definition.
'compliant' is the first definition.
(I've seen this before)
'as one's landlord will be' is the second definition.
(a landlord accommodates tenants)
(Other definitions for accommodating that I've seen before include "Compliant" , "Obliging - providing a room" , "as Mrs Hudson was to Holmes" , "Willing to help" , "Complaisant" .)