Photographs by Edmund Blair and John Ndiso

Kenya's authorities tore down a badly built residential block in a poor Nairobi district on May 17, one of more than 250 shoddy buildings that could now face demolition after a six-storey structure collapsed this month killing 51 people.

The Kenyan authorities have identified 258 buildings considered structurally at risk and which could be pulled down, leaving thousands of people to find new homes in a city already struggling to keep pace with its growing population. 

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"Demolitions and other short term legislation are not the issue," said Constant Cap, an urban planner based in Nairobi. "The long-term solution is to curb mismanagement at the approval level, find out who is approving these buildings."