At about 14 minutes and 53 seconds into as Pitkin is about to turn the corner of the house to deliver milk. The blue garden fence and drain pipe has no green leaves hanging from the side. Yet when Pitkin turns the corner now the set version. A hanging green plant can be seen on the corner of the fencing adjacent to the house.
The house is flooded with far more milk than the milk urn could contain. When the door is opened to let the milk flow out of the house, it collects around the doorway. which could not happen if the houses were really on a hill.