I saw Orcs coming and delayed going into the chapter. To get through it I had to not upgrade many buildings to Orc level. The ones that I needed, like the armouries, I tucked away in my guest race area. Once I'd raced through the chapter I upgraded everything straight through the Orc levels to Woodelf levels. It was especially annoying since I couldn't bear to have the fluorescent purple Fairy houses either!
With streets I have areas of one kind or another, but there are only really two kinds I like, so save for my central square with its golden streets and a few bits of Dwarven street, mine are all cobbled streets or Lore streets.