Chris I think they can get a deficiency even on a primary.. at least it was that way pre 08 as I had a few clients that were buying RE from us that had that issue trying to relocate and were under water in Texas.. 

Most of the properties I bought are in the "high end of the low end" range, and none are on or near the water, which helped a lot.

...in its simplest form, you just divvy up the water bill 10 ways....watch water usage drop.  

He had an issue that the water lines were 1/2 inch and the toilet drain was PVC. 

So I’m in a bit of a bind, I have a duplex I’m house hacking we remodeled entire thing, new hvac, electric panels, electric main, updated plumbing, water heaters, furnace, install central air, roof.

How much time would it take you to re-coop that cost purely through the rent alone?

My water usage bill is the same,  general lability coverage is the same, if and when I have to replace my water service line it will cost the same, the cost for my lawncare and snow removal costs the same, exterminating services cost the same and the list goes on.   

(forced air, steam radiator, hot water baseboard, etc)?

Purely by coincidence I saw him at one. 

Asking price: $399kRehab: $65kARV: 570k The roof was replaced in 2024, the water heater in 2019, HVAC in 2019.The house looks to be in good condition..., but will need some cosmetic repairs.