The individual unit of the flat is very small. I was told that the units have two configuration – single and double bedroom types. From the outside, it looks pretty small. And from what I recall the last time I visited my friend decades ago, it was really small. The ground floor folks “extended” their units by building additional substructures, as you can see in the diagram below.
There are so many things that the people do with the substructures, ranging from shops to parking lots… to… central kitchen! Not really central kitchen but a bigger kitchen for those hawker stalls next to the main road.
I do not want to imagine what will happen if a fire breaks out, but it definitely looks like a major fire hazard to me.