If an individual rents out the garage from the owner but utilizes it to store one classic vehicle and to fix up their own second personal vehicle (all as a hobby), would that constitute a business use? 

OOS investing has a dark side, not only for investors, but also for the residents and the city.Milwaukee is a classic target for "cash flow buyers" and that creates a lot of issues.

All,I thought I would add some context to this classic discussion is anybody is still following.I set up a rent by room here in Houston this year, looking to do more.

A common and simple investor split I have heard of in the past is the classic "Partner A provides most if not all the capital, Partner B provides the sweat equity and management" and the partner's go 50/50. 

In his quintessential classic book: Think And Grow Rich, Napoleon Hill takes about this and how to imagine a council of wise advisors all in your head though.

@Joe SplitrockJason Hartmans classic “ Inflation induced debt destruction” and just another reason why buy and hold is so powerful.

Mackey's descriptions of classic financial bubbles and crowd psychology is still applicable today.

Either way your probably going to need legal representation to figure this out.. and getting as many investors together to compare notes will also be critical.someone should have the orignal note.. and you can find the mortgage at the county recorder hopefully these guys actually did a mortgage and note and recorded the mortgage.. this is classic set up with those that really dont understand how the transactions are or should be put together and your just trusting.

Oh the classic house hack!

Classic BRRRR deal where deferred maintenance was addressed, rents were increased and capex was completed (new Mitsubishi mini-splits, new hybrid hot-water heaters and new roof).