For instance, in older homes, what type of electrical is there?

One could be the tenant does not at present qualify for a mortgage, for instance, if he's not at a job long enough.

Contracts, in many instances, do not have to be in writing to be legally binding.

But I want to be squeaky clean also if we have to prove that our LLC finances are separate from our personal affairs in instance of litigation.   

For instance, as a flipper if I wanted 40-45% profit margin then I do the calculations at the star of underwriting to see it the deal makes sense.

@Stone Jin, selling to an unrelated party in a 1031 is fine in many instances. 

For instance, by nature, most (though certainly not all) QOZ funds will be investing in "up and coming" areas, wheres there are no geographical constraints to a traditional 1031 investments. 

But this is a co-op, and titles are not used in this instance as far as I understand it.   

For instance, if you are looking for an owner occupied multi family find an agent that has gone through the process with a client and been through the different aspects that are unique to buying that kind of property.

For instance, NYC multi family will definitely not cash flow positive with 10% down unless you bought it dirt cheap which rarely happens.