Wouldn’t it be possible to ‘drone-mapping’ whole area’s with adress-numbers painted on their houses ?
I hope you can see this:
Let me quote the key part of that:
I often wonder about the fact that when you do get involved in mapping anywhere like Africa you start seeing people trying to map things that other parts of the world wouldn’t touch, or wouldn’t consider permanent or important.
Here’s a live link to the cool map shown above: https://www.openstreetmap.org/#map=17/-1.26166/36.85729
It’s odd the article didn’t choose to include a live link, nor spell the slum name correctly, making it unfindable via Nominatim. Anyway, it’s in Nairobi near the military airport.