What relevant advice would you give to a tradesperson, tenant and property owner?

in relation to a fire in the kitchen?What relevant advice would you give to a tradesperson, tenant and property owner?
We need more info here: It all depends on if the tenant caused it or not. If the tenant had renters insurance or not. How bad was the fire?What relevant advice would you give to a tradesperson, tenant and property owner?
Did the tenant not have renter's insurance? I pity him if he did not.