We were commissioned to design this office building with a couple twists - an orange roof, and a cavity to hide something as this was going to be used in a game. That was the easy part! If you look closely, we had to develop a half-stud offset around the whole building so that we could appropriately set back the windows. Easier said than done! But this model was such a hit that we received multiple reorders.
See how they used their custom LEGO® piece set in this blog post.