well if you look at the pic of grogall, all the buildings have their windows on the same height, Fire Brigade is something else in my opinion because its a fire station with a rather large garage in it. but if you place Green Grocer, Grand Emporium, Cafe Corner and Pet Shop, you see that the floors are all around the same height, and with the Town Hall its just that bit higher, i don't like that very much, the difference between heights of the building is of course normal in real life/
but it's also part of my personal preference that i rather see the windows line up a bit.
And yes i live in the south of The Netherlands as well, just north of Maastricht so i can go to there and i have many examples of the things i mentioned above, go to ''de Markt'' in Maasticht or look at the buildings along ''het Vrijthof'' in Maastricht and you see most buildings have their floors on the same height