Stove Fire and Subsequent Actions & Expenses

[Larry Breitfelder]

I don't have much experience with fires.  A California property had a stove fire that ruined the microwave above and damaged some cabinetry.  What I'm really worried about is that they have a child with respiratory issues and the perception/reality of soot and chemicals smells getting into the fabric couch etc.  We want to be responsible and fair, but I am concerned that costs could get out of hand.  In your experience, what is legally required and what is customary/