My dream house would be made of ACC blocks (a type of concrete block if you didn't already know) with mineral wool panels on the outside clad with cement board siding. If possible, I'd also go with a concrete roof. Add some mineral wool lined exterior window shutters and the house would be virtually fire proof, water proof, better at survivng earthquakes (at least the walls, maybe I should go with a wood truss roof) and have an excellent insulation R value and thermal mass.
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