Most can do it for the cost of the initial service call, if not it usually would be a slightly more charge.  

Even if you end up paying a PM for the service to place a tenant, there's no guarantee that they will last long if these other parameters of due diligence are not met.

You would be violating Airbnb's terms of service.

There are companies such as Cover that offers a full service ADU deliverable from design through construction completion.

Quote from @Jeffrey Hill: There are a couple of challenges with financing the difference. 1) The current servicer has to approve it. 2) Finding a lender to do a 2nd mortgage at 100% CLTV is almost impossible.

I'm using Minoan to furnish a luxury STR and it's been incredible, and I am actively trying to find a way to better leverage their service. 

Happy to be of service.

From sourcing turnkey rental properties to finding long-term residents, and comprehensive property management, our expert team offers a full-service solution for a truly stress-free investing experience.

New Roof, New Windows, Paint interior/Exterior, New Appliances, New Garage Door, New Fascia, New Fixtures (Bathroom and Ceiling fans), Electric Service Upgrade, 1204 Sqft, built 1960.

But her company, like so many, has whittled down their actual service to the point that they aren't really doing useful work, just enriching the CEO.