Bailiffs are expected to evict 11 families from the property today. The Metropolitan Police said the lease on the building expired last December and would now be sold.
The remaining residents have been given another month before they have to move but although some have found new accommodation others say they will be homeless.
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The Hammers moved to the Olympic Stadium in May leaving their old site to be developed for housing.
The first officer shouted "look!" as the drone passed next to the right wing at around 11,000ft above south-east London.
They found a sheepish looking ewe with a traffic cone on her head in the middle of a field.