That's my point though.

Saying "Africa" or the "West" or "Asia" is too broad.

Housing and urban planning norms, regulation, and laws are very dependent on regional, jurisdictional, and institutional norms.

Slum redevelopment in a democracy like Nairobi, Kenya is going to be very different from authoritarian Kigali, Rwanda.

And even within a large country like Kenya, with norms and personas in Nairobi City County being distinct from those in neighboring Kiambu County.

Jurisdiction and institutional norms vary significantly given how governance has been so distinct from African country to African country. Some were governed under British colonial legislation and retain British colonial codes. Others were governed by French colonial codes. Others yet completely rewrote their legal codes after revolutions or reformist movements.

Giving a broad recommendation without taking into account local governance context is just ridiculous.