Interesting concept from the founder of Zillow where there is fractional ownership and flexible use of previously pipe dream homes. 

You could even ask some property managers on their opinions, some buyers like professional management in place.I love the idea of asking your tenants to pay market value for the houses that they live in, and let’s be honest, home ownership is a good gift to give people.

As we sell a "lot", the cash is transferred directly to the Bank, since they have a lien on the property. 

Its not a matter of ownership. 

Is there a way for her to utilize the tax advantages of real-estate through the 30 year ownership?

I need advice on how to approach this ownership transition.

My wife and I are equal investors in these properties, thus looking for a way to have ownership for both of us.

@Christopher SmithI would be transferring money from Canada to the US.

doesn't get much easier then cashap/zelle/online etc....maybe a direct bank transfer via ACH? 

All you do with a HELOC is transfer debt from one loan to another.