DSCR loans underwrite to the income of the property, and do not require your personal income, taxes, debt-to-income ratio, etc.Of the 1,100+ loans that our team closed last year, I want to say that only 1% to 2% of those were closed in a borrower's personal name.So, it is pretty irregular for us to process an investment property loan under a personal name.Clients usually opt for closing in their personal name if they simply do not have an LLC established yet. 

I work with several who go to 600 or don't require a FICO for commercial at all.  

It is hard and will be a full time time job to do it right. 

Using a HELOC for the down payment on the second home might be an option, but lenders may require you to wait a few months post-closing on the multi-family before approving new loans.The BRRRR-style approach could work if you can renovate and refinance quickly, but make sure the timeline aligns with your lender’s requirements.

You seem to have done a great job with this property so far.

However my understanding is that exceptions can be made if unexpected life events happen such as job relocation, eminent domain, marriage, divorce, changes to family size, deployment, imprisonment, bankruptcy etc. 

Most states require 27+ days of continuous stay before they are considered a tenant and not a guest.

The high end is the 20 or so co ops on 5th Avenue or Park Ave (one is on East End Avenue) that require liquid assets of $100 million + to gain board approval.  

Most individuals can originate the debt these projects require as well so its not as if your signature is opening the doors to properties these partners couldn't purchase on their own either.  

It would be a different story if I were endorsing a business that was not doing a good job.