[DennisP]

Why wouldn't those apply anyway? Anyone can rent out a room, condo, or a house, just by posting a classified ad, and landlord-tenant law applies. Nobody has to share information with the state under normal circumstances, but if there's a dispute, the courts apply the appropriate law. The same sort of framework could apply to Airbnb rentals.

[ectoplasm]

I agree, it could work. The problem people have is that AirBnB is unregulated. Normally you do have to share rental income. There may also be local regulations prohibiting rental, sublets, short-term rentals, etc.