My theory on the "open house" was that he had a friend's office (I assume he has a friend, not known) that he was going to pretend was his. After all, he said it would be "streaming" sounds like he wasn't going to have a PHYSICAL OPEN HOUSE.
I remember another scammer that took a picture of the outside of a building, photoshopped the company name on the outside of the building and VOILA.. he owned a building. HAHAHA
The moral of the story is, one never knows what people will do.
You are correct.. no "house" to "open" HAHAHAHA