New plumbing, electrical, and mechanical behind the walls? 

The majority owner should be required to sign reps & warrants at closing to be personally liable for them.You didn't mention checking the plumbing - hidden plumbing leaks can cause more damage over time than just about anything else!

@Joshua SunThings that drive the ARV the most - roof, plumbing, flooring, paintThings that don’t drive ARV as much - windows, landscaping, driveway

Where I lack understanding is at what point do you start making money for example you buy a duplex lets say it was 300k the monthly mortgage is 2,500 each renter pays 1,500 thatd 500 cash flow which is I guess “profit “ but as the landlord you're responsible for major repairs such as but not limited to roofs, plumbing issues, electrical issues that all can be expensive you would have to have money saved so that 500 cash flow is profit but wouldnt it just have to sit in a bank account? 

I'm doing the majority of the work myself and only contracting out the rough in plumbing.

There have also been rumors of a major plumbing issue in the 6 unit. 

Or paint the perimeter cabinets in a warm white and accent the island in another darker color for a contrast that feels like it's a piece of furniture.Black Door Lever Hardware and Plumbing Hardware, Cabinet Hardware, Accents and Light Fixtures are a nice pop that feels modern and cohesive. 

Dates of updates to the Roof, Electrical, Plumbing, and Heating systems4.

If you move anything, walls, plumbing, electric, get a permit.

Our tenants were extremely happy that we required it when a plumbing fixture failed and flooded the house (this is extremely rare, so don’t let it deter you.)