@Joe Jor brings up some great points and I like his suggestion for contacting the building dept.You may also be able to negotiate credits or for funds to be held in escrow - until seller removes open permits, violations, etc.Lastly, for estimates on the work that will need to be completed on the property, you could also contact an expeditor who services Westchester.All the best to you on your search!

Then once I feel like they may be a suitable borrower for my business model, I consider the deal.   

In my opinion, this is much more effective than texting, which often feels like a constant game of cat and mouse with phone carriers.

You can 100% refinance into a DSCR loan and close/vest in your LLC, however, I would imagine the rate is likely worse than what you have now with the conventional loan which would impact your monthly cashflow.

You sound like a child who got into their dad's account.

In my opinion, this is far more effective than texting, which often feels like a constant game of cat and mouse with phone carriers.it is relativly simple and although costing money it is relativly the more cost effective one.

I'm not saying you can't ask for it, but in a practical sense it likely doesn't matter on most small sales. 

Specifically, I’d like guidance on what to offer the investor(s) for the use of their funds over a 12-24 month period.

There are a few possible programs out there for first time home-buyers that will assist with your down payment as well.

like a mortgage?