Exceptional comparative value and lower operating costs. 

So, the extra unit may cost you more then it brings if you cannot access equity or if the market discounts the property when you go to sell due to financing available.

Where is the property located.assuming the seller added the ADU and did not disclose the ADU in disclosure forms, you may have recourse (depending on the rules of your jurisdiction) but it may cost you some legal fees. 

Building a 4,000-square-foot, three-story duplex with a 1,000-square-foot ADU could cost about $1.83 million, including construction and permits (excluding land).

Sure don't do the renovation, I only do renovations that project a return of 2x the cost of the renovation.

To be brutally honest i don't care if it's at cost, below or above, I only care what it is exactly and how much. 

Yep, off water, but with nearby water access and view seems to be the same ROI considering the cost of the property. 

About the same as if you rent it, less costs.

There is a reason why I buy properties that cost a multiple of what typical cheap rental properties are going for.

Plus, these properties are usually sold as-is, so an inspection wont change much.What experienced Flippers Do InsteadBring a Contractor Instead A 15-minute walkthrough with a good contractor will tell you what you need to know.Know Your Numbers Upfront  If you price in a repair buffer, minor surprises wont kill your deal.Use the Inspection Period (If Allowed)  Some wholesalers offer a short due diligence window use it wisely.When an Inspection Makes SenseIf you’re new and not confident in spotting costly repairs.If its a high-end deal or potential structural issue.If your lender or partner requires it.If you do need an inspection, find an inspector who moves fast and work directly with the wholesaler to coordinate access.