(on the buyer side) or is there some regulation against this? 

Airbnb Considerations:For Airbnb, make sure to check local regulations in Tampa regarding short-term rentals.

The extreme tenant friendly laws in Ontario and increasing regulations for short-term rentals are additional reasons why I do not find investing in GTA no longer viable.

There are very strict regulations but possible. 

But I would like to use my chance to comment on this to emphasize how much of this situation really reflects on how you've managed the landlord-tenant relationship to date.In a high-regulation area-of-operation like California, cordial landlord-tenant relationships will get you past a lot of garbage like this.

Check your local and state regulations regarding this business model.  

They must provide you a copy of the rules and regulations.

Even if you have a cpa who isn’t well-versed, she’d be enlightened once she reads the irs tax regulations cited above. 

The card company will reverse that charge because the tenant is their customer.  3rd party payment processors don't have the regulations placed n them for investigation, etc that banks do. 

We are working with a consultant on staffing and regulations.