He already did all the hard stuff: demo, new roof, new electric and plumbing, new custom windows, drywall.

The electrical is located in garage.

@Greg DickersonIf I were to frame metal 2x6 walls along all the concrete walls and core the holes for the plumbing / electrical rough ins why are my construction cost going to be 30-40% more?

Kwikset LocksFlooring I use LVP, generally a click type  I replace all brick mold on ext doors with Vinyl, I use solid vinyl for exterior window sils, and trims when rotten. we replace ceiling fans with just lights (less to fail, and less to get hurt on) we use combo Smoke and CO detectors, so there is only one device for each location they are installed instead of 2kitchen cabinets, whoever has the best sale, and if you want soft close, add it on, dont buy them already on the cabinets, WAY CHEAPER. we generally swap water heaters to electric with stainless flex hook up lines for easy and cheap replacement down the road. also we often replace furnace and A/C or add A/C (im licensed so for me its pretty cheap) if the systems are older

Has the water/gas/electricity been turned off recently, or have they been sent a warning letter that the service is in danger of being turned off?

You would pour the foundation, tie into the sewer and have electrical ready.

Does anyone have any recommendations for networked electrical submeters?

Example: Foundation issues, electrical, plumbing, crazy neighbors, etc.

Zillow shows previous listings for rent at $825 and $1050, so my numbers may be slightly off, but I want to be on the safer side.The property has separate utilities for heat, electric and gas, so tenants would be paying their own bills for utilities.

It's been my experience that there are no original ideas out there - and the very few ideas that are "original" quickly get what I would call clingons riding shirt tails (watch the movie "The Big Short" and you'll see exactly what I mean).If you're defining it as not following trends, I'm still not sure how that goes because people are into everything....you've got gold/silver bugs, you've got REIT investors, you got investors that follow master limited partnerships, you've got various aspects of real estate, etc., etc.Personally, I read and digest what other people have done/are doing.