Common issues include:

Loose electrical outlets (fire and shock hazard)

Missing window screens (mosquito borne illness hazard)

Window sashes won’t stay up on their own (ventilation failure)

Stained ceilings (because they cannot tell whether a leak is active, it is presumed to be a mold hazard)

Flaking paint in pre-1978 housing (presumed to be lead)

Missing handrails or guardrails (trip and fall hazard)

Loose vinyl flooring (tripping and mold hazard)

Refrigerator missing seals (food storage hazard); double barrel deadbolts (egress hazard)

Heating overflow pipes do not vent within 6” of the floor (scalding hazard).

Source: MassOwners