In the Taylors' garage, we can only see 4 walls. Each wall has tools, storage or appliances on or in front of them. The garage door, that would be used to open to get cars in or out, is never seen. According to the walls we do see inside the garage, the garage door, and driveway,
would be located where their living room is.
Brad supposedly sticks a ball bearing in Howard the goldfish's mouth to get him to not float. But Howard is floating with his head up. If the ball bearing were in his mouth, his head would sink and the tail would be up.
Near the end, Tim says "I do judge myself on my possessions and what I bring into this house." On the word 'possessions', the shadow of someone, likely a crew member, can be seen flash on the wall behind Tim for a moment.