If they are relatively the same but offer a front desk etc maybe they are superior. 

They are usurping your property for the benefit of the public.

Yes, there are some circumstances that would allow you to assume it; relative, death of a spouse, etc.

What I'm wondering is: is there a way to get the cash invested into this rehab back out of the property in a relatively short timeline, as if it were a BRRRR?

That self-sufficiency test is sometimes the killer on 3-4 units, but the conventional 5% down option has benefits too and that's how I got into my first multi-unit househack.  

As a result of being federally charged with these crimes, you may face monetary fines, penalties, prison time and other consequences of Equity Skimming.Equity Skimming and related penalties of sentencing are detailed in 12 United States Code USC Section 1715Z-19.

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.

Quote from @Mike Donovan: Found this thread as I am researching Landlord insurance as it relates to student housing.  

The homeowner has direct title, can sell at any time and gets 100% of the appreciation and tax benefits on these houses.

You are (older/retired) and could benefit from house hacking and buying a duplex, or renting a room.