Investor? Or Rentier?

I quibble with the use of the word “investor” here as the real investors are the people who live and work in and around that building, adding value. The putative investor will be simply collecting accumulated rentier wealth, growing rich in his sleep, as JS Mill said.

Landlords grow rich in their sleep without working, risking or economizing. The increase in the value of land, arising as it does from the efforts of an entire community, should belong to the community and not to the individual who might hold title.