With all the public transportation available and the cost of parking in downtown and other area that folks work, it is more and mOre common to only have one vehicle per household.

There are smaller scale vehicles you might want to consider.

In the garage there is a vehicle lift which as of late is now broken.

This is far from a cash vehicle. 

A warzone neighborhood is heavily crime riddled from home invasions, carjacking, to purse snatching, drug infestation, unkepted lawns, trashed streets, abandoned vehicles(which oddly enough Philadelphia local officials have taken a stand on those back in the 1990s and they are rarely seen at all today but the blight houses still exist heavily).

You are required to be an accredited investor with all of these vehicles. 

If you allow $5000 you will have a lot more potential investors available and be offering your fantastic investment vehicle to a lot more people that really could benefit from the opportunity.

In a situation such as yours, real estate being more of an income diversification or retirement vehicle, turn-key or minimum value-add would be the way to go.

It feels like a vehicle more for owners than renters.Which brings me last concern: if the cost is almost 4x SFH, this would seem to mandate partner involvement for many newish investors, in which case, why not just solo purchase duplex?

Vehicles in the lot were rusted and decrepit.This property is listed for 920k and probably isn't even truly for sale.