The new bathroom will be constructed within the existing structure, and while electrical wiring might be needed, plumbing installation is definite.

I put in a well, brought in electricity, a gravel driveway, a septic tank, and a fence around part of it for my horse.  

If a deal doesn't work if you have 3-4 worst case scenarios in plumbing, electrical, etc... then it wasn't purchased well enough to make it worth the time and effort. 

If the unit has issues such as ingress/egress, bad electrical, is newly developed space without meeting minimum ADU setback requirements, etc then of course the jurisdiction can red tag it and enforce it.  

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.

@Jon HaneyWhat is the heating source, gas, electric ?

Who paid for my windfall, not sure, increased national debt perhaps. its also how they are selling electric cars. 

Hello,We have an original fused disconnect from 1950, when the building was built but all of the apartments have circuit breakers.  I understand that even modern multi-families may have main disconnects that are fused...

., flooring, cabinetry, electrical systems) into 5-, 7-, and 15-year depreciation schedules, the property owner could accelerate depreciation and front-load these benefits.

The city approved rental license inspector essentially just tested to make sure there was access to hot water, access to heat, no unsafe conditions like exposed electric wiring, CO/smoke detectors present/functional, fire extinguishers present/not expired, etc.