Yes, most of our DSCR products do NOT have pre-payment penalties (as long as you are not refinancing AND had the house on the market in the last 6 months) and with 20% down would be the in mid's 7's assuming good credit/DSCR over 1.00 etc. 

Treat the customer with respect, provide safe and desirable products,   purchased at the right price and condition, provide quality management  and anyone can be successful no matter what the product or market.  

He needs to be a manager, organizer, motivator, and educated in the trades and he has to give a you know what about the finished product of your job. 

You could always slip a 6 x 1 metal drip edge under the first row of shingles before you roll on the sealant.But yes, if you want the ultimate, and longest lasting product, metal is your way to go.I would not use a handyman for a job like this though.

There are value add products for multi-family 5-20 units that do not use DTI to qualify.

That takes my time most nights, and weekends to receive/pack/ship those products but is super flexible with time.On top of that, I self manage 6 of my own rentals, the cash flow pays for my current mortgage and repairs so it makes living in my primary house free.Experience now:My wife and I have 6 rental homes locally, all rented, all cashflow.

The contingency states Defects do not includes those the Buyer had actual knowledge or written notice of. 

I think you might have to find one of the local builders vs the production ones. 

Hey maybe it turns out great, but still no real product years later and now this. 

I have been involved in litigation in the past when a subcontractor ordered materials from China and the formaldehyde levels in the products were not satisfactory to the buyers of the units when they did their own testing and they filed a multimillion dollar lawsuit.