Buildingsuper

4 clues
Apartment custodian
One who deals with flats
Apartment 1A dweller, perhaps
Person who might live rent-free
Similar answers:
Aframebuildings
Bawdybuilding
Boatbuilding
Bodybuilding
Brigbuilding
Building
Buildinga
Buildingacase
Buildingblock
Buildingblocks
Buildingbox
Buildingbridges
Buildingpermit
Buildingperms
Buildingprotractor
Buildingshiites
Buildingsnowmen
Buildingspecs
Buildingsuper
Buildingsupport