It is essentially sharing a property with tenants whether that is a room, basement, adu, etc in which their rent supplements the mortgage.

My favorite response is "I aim to please."

Here is what I see:Syndication:You join an organization that has a general manager who helps investors buy a part of a development for a unit price (often $50K or $100K) and the aim is to improve the development and select a location where the appreciation of the development combined with the increased income post-renovation create a valuable deal for larger scale and institutional investors.

I ask as I was aiming this towards Brokers/Agents as those are the folks who have something to sell & their life blood depends on getting in front of people.

Your question is really more aimed to your accountant the possible changes that might be required to interest expense and other write offs for the refi when done for personal rather than business purposes.  

To supplement the rental cash flow, I am very interested in wholesaling properties as well.

Also, if you expect capital appreciation (never bank on it, but aim for it), then even more reason to use leverage. 

Them someone is going to get hit with a supplemental tax assessment for taxes at the new appraised value.

You'd have to get around $1000 a night for each unit and have good occupancy (I aim for 21 days or more). 

I do have business credit cards, and am aiming to apply for more on the business side, especially when they don't show up on my personal credit report.