[TexasGator]

"No building owner would knowingly allow tenants to carry propane tanks into their apartments, "

[meatloaf]

I used to do inspections for insurance companies.

Grills on decks were reported.

[T.B. Yoits]

Those gas grills for apartment balconies are outright illegal in many jurisdictions.

Forget just the landlord and the insurance company. If the fire department is aware of propane tanks on balconies, the fire chief will order the building evacuated and revoke the Certificate of Occupancy if they're not removed.