“Maybe he could leave part of the basement with a dirt floor with some pottery stuck in there and charge for tours!?”
Did some construction work on a house once that was sited on the edge of a sapphire and ruby ore body. There are several tourist type panning mines now but in the hay-day of the early 1900’s Tiffany’s had a mine there.
When the owner excavated the house footings he found enough gem quality ruby to pay for the entire house.
I would have put in a big pool too!