Does anyone have experience exchanging their small multi family property into a single family home, use it as an investment property then move into it as a primary residence after meeting the requirements?

Fix and Flip -Requires a minimum down payment of 10% with 100% of the rehab financed. 

You could also use a Fannie May Home style renovation loan which a conventional loan and require 5% down vs.

There's also plenty of lenders who falsely represent the true capital requirements to originate their loans or are merely up front fee collectors. 

My suggestion is to simply file the BOI requirement.

Use tools like the VA loan for house hacking and your Basic Allowance for Housing (BAH) to cover living costs while building equity.

I can't speak to what time these slobs left as I don't require notice but the cleaner was there promptly.  

I wasn’t prepared to lose so much of my savings as carrying cost basically I paid for the tenants to live there for 3 months + my own living expenses in that time.

This just covers the basics: how many people, do they have pets, what is their timeline for moving?

Permit eligibility is based on region (usually the west side of town) and density (quantity of surrounding STR's in the area) as well as percentage of landscaping and minimum parking requirements.