How do you define small business such that it excludes a one-person renting a house/apartment operation?
I think that's a protection against the business owning a Trust that owns the land. It's to force the business to own the land directly.
(That’s the SBA cutoff for “small business” in property renting; NAIC business codes 5311x0.)
https://www.sba.gov/sites/default/files/2019-08/SBA%20Table%...