I would guess unnecessary delays. Leases or property ownership can be verified with a phone call but probably needs to happen during business hours and if you are prepared everything will have a better chance to go smoothly. Property ownership is public record but a lease might be a bit more trouble to verify if the landlord is privacy conscious.

But I mean what is the conversation like?

“Here are the only documents I am legally required to show you.”

“I need to see a piece of paper with a random address and your name on it.”

“I don’t have that.”

What happens next? They are not able to not let you in.