Your ROI is supposed to be calculated by dividing your net yearly income by your total acquisition costs.  

Or the days back in the 80s in Nevada I could take 10 Acres and for $250 divide into 4 2.5 acres, turn a 30k into a 60k piece with a small investment, those days are long gone. 

What divides renters and owners when life happens, whats the difference?

That is taking the $160,000 divided by 27.5 years (irs straight line depreciation schedule).

Depending on where the site is, maybe: Factory 2-U, Planet Fitness, OfficeDepot/OfficeMax, Fresh & Easy. 15k sqft won't necessarily be easy to fill, so if you find one tenant to take the whole space, consider selling the building for a good profit once leased up and move on.Alternatively, maybe it could be divided into 2-3 smaller suites, making leasing easier... barbershop, dry cleaner, Subway.

It is an odd property, older than the other homes on the block (built in 1900), half the basement floor is dirt, and it's one of those duplex sized buildings that was instead divided into four small 1-bed units which I occasionally see in the older neighborhoods of Milwaukee.

However the likely scenario is that there will be x amount of money left for all unsecured claims which will be divided up by each creditor's pro rata share and distributed likewise.I am also speaking in terms of a Chapter 7 bankruptcy.

They live in the front 1,500 ft, and the rest is divided into two studios (his/hers) and a woodshop for them both.  

I'd imagine it wouldn't be extremely difficult to seperate the wiring, relocate the panel and add a meter to the apartment (the basement is one large basement divided between two units).I'm wondering if anyone has ever added an electric meter to a house?

Take EBITDA and divide by purchase price.