I think the convivence factor for the customer isn't there. 

In this post type of concern  I ask my circle of influence (bankers, insurance, contractors, fellow storage owners) their perspective on the economy and also their sphere of influence.  

However, rate would be prime + index + an additional +2% for the shock factor just to qualify, but you can draw the funds whenever you want vs cash out where you have to draw all the money after closing.Many borrowers would keep opening lines of credit, assuming you have the equity + income to qualify, as you keep rinsing and repeating the heloc process.

Obviously price will be the biggest factor to move a SFH but there is more that than just a number. 

These factors also play a role in determining a tenant's eligibility.

SWFL We Have A ProblemA year and a half ago I sent an update with a warning that there were several factors that were potentially going to impact in SWFL real estate including immigration laws that were passed.

State income taxes - IntuitAnother factor to consider when choosing a city is rent restrictions.

With the current interest rates, it is a lot less work than a rental and she'd probably make about the same (if not more factoring in property taxes, insurance and repairs). 

But I doubt it will be the deciding factor.

With or without science, my experience is valid enough for me and has and will continue to influence where and how I invest in Real Estate.