Warm, moist air from the interior is getting up to the joists and condensing against the cold surface(s).

If you are talking about interior doors, the 28" is probably fine.

Locally we lost 80% of of our onboarding and offboarding international cargo at the airport.

The 8-year old furnace is still working , can I charge tenant for maintenance cleaning up of internal components?

If I just wanted to push dollars around for a return I would play more heavily in the financial markets truth is I love buildings and interiors...for that I have to be local.

Painted interior and exterior, updated kitchen, and bathrooms.

I know that in CA only new improvements would be assessed and we don’t plan on making major changes to the first floor besides perhaps knocking down two interior walls to create an open floor plan.

I am not buying that the interior water issue is from the siding holes. 

If you know the roof, HVAC, plumbing, electrical or interior renovations will need to be done soon you should budget for these items.

I have a small internal team and I buy real estate assets for my own personal portfolio.