To throw a wrench into things, if we were talking about real property/structures that were being short term rented, it's possible/likely that your depreciation period would be 39 years, not 27.5.However, a vehicle - which is what an RV is, regardless of how you're using it - is 5 year property.

We have made money buying properety based on cash flow (lower priced) rented out for a period, then selling to an owner occupant. 

He uses poorly thought through methods, I've listened to his "methods",  Thus, he has the high amount of  Due On Sale called in a short period of time. 

I make my regular interest-only payments for the first 7 or 8 months, and my interest-only period lasts 5 years.

Was it something you started out on or was it more after a period of success with a different strategy?

If I only need a small amount for a short period of time, a HELOC works great although rates are variable.

A number years ago, I went to town buying a bunch of rentals in a short period of time and I can assure you they took money from my family instead of putting money in my family pocket.

I just meant to say that it's our next goal to build that up, having just gone on a spending spree on fixing up both properties in a short period of time.

Sorry, what I meant is if she lives in the house for 10-20 years with you paying for everything, you are paying for her housing for that period of time. 

There is always a transition period where selling owner stays on and over time new owner transitions into full control.