This property doesn't seem like it is viable for buy and hold because of the expenses are 120% of Income, which is why the cash flow is negative $937/mo and cash on cash return s -14%.

I've heard many stories about SFH rentals and half of them were negative. 

However one thing I am wondering is if you have a tenant (I am speaking from the commercial side of real estate) and have a NNN lease.

Please PM me if you are aware of such syndicates in the dallas area, I'll definitely speak with them.

You'd have to reduce rental rates so sharply that it would have a negative return from day 1.But if you are going to proceed- I'd go with ductless heat pumps.

I cannot speak to whether this is the norm for every deal, but so far the process has been as follows:1.  

I am trying to get comfortable with analyzing deals in Bronx, and I am just guestimating all the numbers.Asking price for this place is $125k and my analysis shows that it will have a negative cash flow.Then I lowered the purchase price to $75k, and I still have $40/mo. cash flow and 1.78% COC ROI so I quickly had to let this go. 

This would be a refinance is that right so I should speak to the refinance department?

That said I would definitely try to find one of the handful of negative threads on here that I've seen in the past.

They ran a negative $10K minimum cash flow each year.