 The "mushonge" gradually shifted to a mud walled design ("kiteti") and then a mudbrick design ("banda").Today, most Haya live in square houses with a corrugated iron sheet roof.Reasons for the shift from vernacular architecture to a modern design vary and include the issue of space as land was further divided up among the family, Tanzania policies under "ujamaa" aimed a rural development, and Christian values that viewed the vernacular design as backwards, including its symbolic components that reflect traditional Haya religion.