Perform your due diligence of course, confirm the seller has no debt lingering on the property, and more simply have an attorney review and draft a custom agreement to protect your rights and interest in the property.

My family built custom homes too so I have knowledge, but learning the investing side is complicated.

I’m not too sure what you mean by high end vehicle storage and what you will offer but I do know that an individual where I live made fancy units that had a lot of unique offerings for customers and he regrets his decision to do so.

The nice thing about it is if a customer files bankruptcy, you collect pennies on the dollar if anything, but with credit insurance, you collect a lot more. 

The only true difference between the big banks is the customer service and speed of the loan, even the interest rate is usually within an eighth of a percentage or so.You need to analyze why you got denied.

Independent contractors (eg, 1099) think they are employees (W-2) and don't know the difference (by definition, you are not an employee of someone giving you a 1099... that person is your client/customer, not your employer).Preapproval: Full doc everything, LO reviews and runs the automated underwriting system.

I would assume the rest will be the same since they have to protect their customers.  

I can suggest @Gregg Yearwood from Chicago https://www.linkedin.com/in/greg-yearwood-21767722/On such a small property I would perform your own Capital Needs Assesment utilizing local trades and formulate a replacement reserve plan.

Customer support has been pretty good with getting the details figured out. 

Why I haven't taken the plunge yet to actively searching or formulating anything, (kudos to you for acting) knowing what you want, comparable cap rates and estimates of cash on cash returns would  give one a quick filter to screen out properties before looking.