Luckily, one of the first criteria for if a place is habitable or not is ‘easy access to large quantities of water’, and building code wise, access to large enough quantities to put out fully formed full structure fires is required too.

It’s also relatively simple training and equipment wise (‘spray it with water until the bad flames stop’), and most locations have teams of people on call and ready to do it.

Not perfect, but it’s the best we’ve been able to come up with outside of specialized industrial environments. shrug