It is a top/bottom style duplex with a flat roof and a basement so there should be no issues around ducting. each floor is around 1,100 sq ft  Any idea how much I should be looking to get this quoted for?  

@Maria T Carrillo @Alex Bekeza can help you out

The worst case scenario for me would be to just purchase rentals turnkey style. 

For garden style apartments, average OpEx was $5,661 per unit per year.

@Alex T.

It depends on the age, construction, roof style, etc.

That said I was wondering what experienced wholesalers  do  or would do to dot all their i's and cross all their t's on the property to ensure there aren't a bunch of liens or other issues that would disrupt a smooth closing before calling a title company and spending hundreds of dollars for them to do the same thing?

The plan (his plan) was to take the upstairs of a large, beautiful, historic building and convert it to 4 dorm style units.  

Finish your education, get established in a career with a couple of years of employment and use that time to live the most frugal life style possible to save up the cash needed for the necessary DP and reserves.

@Mark AndersonIt's a two way conversation.So, you should tell them what you are looking to do and the style of investing you want to work with.