StarBlazer: What happens if I insure at the lowest amount - which happens to be the estimate from AMI?
They send round they assessor, contact a building company and come back with a figure. If that figure is more than the sum insured then I have the option to either put my own money on the table or have the house built to budget - which could be either a smaller property or with less expensive materials/features. If I were to attempt to take insurance on an amount which is grossly under the estimate then they will refuse to issue a policy on the property.
Except that if EQC is involved their assessor won't mean a thing, and you'll have to let an aussie ex-cop determine the damage and replacement cost for your house. At that point, well, good luck getting your house re-piled for $7000.
Unless you work for EQC, in which case you'll get phone calls about paying you out while your in the middle of an assessment.
Remember, when EQC gets involved your insurer just sits back and twiddles their thumbs. You paid a premium over the decades plus an EQC levy, just so that when a disaster happens your insurer can bend you over for the government.