There is a Kenyan custom of abandoning houses after the owner dies. The head of the household in the rural parts of Keny is supposed to build his own house for his family. The male children when they become adults are supposed to continue the tradition. When the elder father and mother die it is acceptable for the grandchildren to live in the house. If they do not move in, the house is allow to decay. The source of this information is Kenyan ex-pats.
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