Different exit time-frames, people missing payments for mortgage and taxes, who pays for repairs, what happens if someone moves, what happens if their life situation changes. 

So if your house goes from 600k-900k in 5 years you'd have to pay them 180k (20%) on the sale.

But if she destroys anything I have to pay for it.

I recently had to use a local laundromat for a couple of months and loved the option of using a designated laundry app to pay.

Remember... contracts are always negotiable, but you both have people to pay and food to put on the table.

All about your goal and growth plan, with a Brrrr I would also add an Atleast 10% contingency for your renovation and make sure the ARV is accurate to be able to pull more cashout or pay yourself back the down payment on the refinance.

For example buy 300k property, renovate it (pay yourself essentially)  turn into 400k+ plus home, increase rents and cash flow.   

Beware, some blanket loans, despite having a partial release clause, will still mandate you pay 120% of the original individual loan amount back to the blanket upon sale.

If tenants are paying their own heat bill, they would call the gas utility and have the unit put in their own name, but tenants can't do that if the heating unit is shared by all four units.You won't have happy tenants if you are in control of the heat and you aren't even on premises. 

That means you own the home, and the bank owns the note you are obligated to pay to them for buying the cash from them.