This doesn't look like a town from high up, it looks like a miniature.
The roofs look like cookies or any other form of pastry. The way the darker parts are make it look baked and the warm colors do the rest.
Maybe it is because everything has such an uniform size, lines up perfectly and is very, very bumpy for something that's supposed to be large that makes it look that way.
This is especially evident in the bricks surrounding the street, they look like miniature stones in a model city.
If that was intended, more power to ya, if not, well, apart from starting over with a lot more flat shapes, I wouldn't know of a quick way to fix this.