This is a sketchbook for some work done for this demo:
https://www.kdab.com/lots-lights-generating-cities/

Any 2d shape produces a house according to ajustable rules. This can form the basis for further refinements and customization.
city2
city3
No city without a tilt shift shot:
Screenshot-from-2017-09-05-14-04-15

houses
Previz level
city5