They're not proper buildings, but rather a shipping container and a container house with fast food joints inside them. In addition to no number displayed (which in itself doesn't mean anything), they don't show up on cadastral maps, therefore they don't exist as buildings before the law. So they can't have numbers. There is a small chance that the cadastre has erroneous data, but I went with the assumption that they don't.

is this line of thought wrong?