I would rather live in a cheaply made wooden house than a cheaply made concrete one. The simple common way to build a wooden house is massively redundant. Concrete houses use post and slab, even in poor countries. So in Nairobi, they were having six building collapses per month.
Your source seems to contradict 'six buliding collapses per month':
"A six-story building collapsed Friday night in Nairobi, killing at least a dozen people. Several buildings in Kenya have collapsed in the past year. Why?"
https://www.csmonitor.com/World/Global-News/2016/0430/Why-ar...