However, the time commitment is not something to take lightly. 

1st step would be to order a desk appraisal to understand the approximate equity in the home.

We got a full remodel, rents were paid the whole time and during the process we actually made some changes like adding over head lighting and outlets.

Electrical would be minimal when the work is done but the rental unit is empty because you're likely talking about a frig plugged in and porch lights on at night (and perhaps a light or two inside on a timer) to give the impression someone lives there for security reasons. 

Demo of old roofs (3-4 in place now), replace rotting wood planks as needed, light siding work, seal up old chimney & skylights, replace gutters/downspouts, and install new roof covering? 

They had a both at last years Noteworthy conference and the pitch there was assistance in determining if a borrower had assets worth pursuing in the collection of deficiency judgments.Another thought, I suspect that @Dave Van Hornmay be able to shed some additional light here as well.

One example recently is at 2 different properties home passed with no carbon or smoke in kitchen was told not needed as it wasnt required just needs to be outside kitchen and same location has boarded windows in basement only no violation but another location different inspector wants a carbon and smoke inside kitchen even when directly in next room and also wants natural light in basement because windows are boarded.

High end trim work, door knobs, light  fixtures can really add up.

Same windows, lights, tile, paint, etc. 

I'm doing some light rehab on my personal residence and I'm ripping out the phone lines as I come across them.