A demolition order is an order requiring that the premises—
be vacated within a specified period (of at least 28 days) from the date on which the order becomes operative, and
be demolished within six weeks after the end of that period or, if it is not vacated before the end of that period, after the date on which it is vacated or, in either case, within such longer period as in the circumstances the local housing authority consider it reasonable to specify.
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