Parking should be ample and welcoming, (small carport roof at entrance for rainy times and wheelchair maneuverability maybe?)

8-10% is standard.Any shared utilities that you'll have to cover?

@Jon Klaus  Jon as we know this is all regional I am always amazed at how cost effective your builds are in Texas I have a 2.2 mil spec going in Charleston 2600 sq ftt and that's going to come out at 300 a foot. not including the lot of course.. which was 570k. in this instance no pilings but we did elevator 20k .. what does it in the historic district of Charleston is all the custom items you have to buy siding roof windows architecture 60k in hard scape landsape on a 4k sq ft lot.. that type of thing. when we are out of the BAR heavy duty areas we are building at 100 a foot or so.. 

I only need the seller to have enough equity to cover their taxes and any liens at closing.

I would like to go in looking like a professional with a package to covers all the requirements.

I.E. you would have to have the income, excluding rental income, to cover both mortgages.

Just be sure the deals/flips can cover the financing and holding costs.

it will depend on if it has an addition put on it.....put a deck that has a roof on it that extends over the other roof and then it starts adding value. 

We just recently bought a house that started as a single family house but now is attached via roof line to another house on the same plat.

Contract states 5 years and after that tenant would need to seek own financing for purchase payments made will only cover interest and taxes no principal.