This time around I made sure to split the mesh info different elements (between 16 and 19) by textures and materials, i.e. (for house nr1):
So it is much easier to add material and textures to the houses (unlike my previous models where each house is one mesh and you have to select the polygons individually (or by element) to apply different materials). You will only have to add UV coordinates and apply material/texture to the selected element - that is why I call the new house models "ready for texturing".
Will be waiting for your comments, suggestion and critique.