Demolition work has begun on the houses that need to be knocked down to allow for safety improvements at City of Derry airport.
Contractors are knocking down two of the 17 homes vested by Derry City Council last year.
Their former owners have already moved, but other residents have vowed to stay in defiance of the Council's order.
Families in the houses in Donnybrewer Road were given until 1 March to move out or face eviction.
Derry City Council owns all the properties after a vesting order came into effect last August.
In February, the Council warned it would enforce the order if the homes were not vacated by the deadline.
But some residents said they were not given enough time to find new homes.
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