[MattGrommes]

After you are allowed to stay in a home more than 30 days you become a "tenant" and are subject to renter protection laws. I'd imagine these short term rental companies will get much stricter about 30+ stays real soon now.

[toomuchtodo]

Does this apply even to people I would allow to stay in my home for free? Or does this only kick in when money changes hands?

[sjg007]

Yep, even free.