A seven year old boy was killed on Sunday when a fire tore through four shacks in Wallacedene, the Cape Town disaster management said.
Ten other people were left homeless as a result, spokesman Wilfred Solomons-Johannes said in a statement.
In a separate incident, 270 people were displaced when a fire destroyed 67 shacks in Ekuphumleni informal settlement at Du Noon near Milnerton, he said.
No injuries were reported. Provision of humanitarian relief aid was being arranged.
Building materials would be provided to the affected households on Monday by the human settlements department, Solomons-Johannes said.
A community centre in the area would be used as an emergency shelter for those affected. SAPA