The great majority of Baghdad is a slum - a lot of it's new, but it's still slum. It's usually this concrete-block, one-room design with a door and a window, arranged one-up, one-down, often with a shop with nothing in it on the first floor, and then a one-room apartment above it. There's street after street after street of that stuff.
Our regulatory bodies strive to create honest dealings, fair trades, and a situation in which no one has an advantage over anyone else. But human beings aren't honest. And all trades are made because one person thinks he's getting the better of the other, and the other person thinks the same.