As I am more than likely going to wind up building a house rather than buying I thought I’d throw this out. The plot I am looking at is heavily forested with gum trees (Eucalyptus).  Having grown up in B.C. and currently living in Australia, forest fires are a BIG issue for me.  Each year tens of squillions of dollars damage is done and hundreds of homes destroyed by fire here (only Cedars have the combustibility of Eucalypts in my experience).
Concrete, in addition to being very “chi-chi”, seems to be a logical choice for fire-resistance.  Is this a reasonable belief?  Will the inherent fire-retardant properties of ferro-cement prove adequate, or is it likely to crack and crumble under the extreme heat generated by a forest fire?
The extra expense (about double) of building in concrete is not really an issue as this is (hopefully) going to be my last home. 
Any thoughts anyone?
Ta.