The building was separated from the land. The new "owners" have to pay a land lease. My grandparents bought the lot next to their house. A business leased the

The building was separated from the land. The new "owners" have to pay a land lease. My grandparents bought the lot next to their house. A business leased the land from them to build a business, then walked away from their building after 10 or 20 years. https://en.wikipedia.org/wiki/Lease#Leases_of_land https://en.wikipedia.org/wiki/Lease#Leases_of_land