I own and operate one Air BNB and I have three night minimum stays.

From a safety standpoint, certain amounts of mold (if I recall correctly: anything over 10 linear feet) require certified remediation (with negative air scrubbers, etc) to avoid cross contaminating the entire property and, frankly, to protect nearby people.

There's no way of knowing if they intend to become squatters so due diligence requires serving a notice to quit and following up with eviction to avoid prolonged vacancy. 

This type of regular maintenance not only helps to prolong the life of the units, it also gives you(or the property manager) a chance to monitor the property.

As you can see, laundromats are “Covid-resistant, Amazon-resistant, and recession-resistant.”World’s Most Expensive Home is in Bel-Air.

There is some rehab involved as far as the roof, old air conditioners, a few water heaters.

It was normal to be high during the summer with the usage of air conditioning with the expectation that the usage would taper off in the winter. 

In the engineering department, I probably want to have experts in electric traits, plumbing, heating and air conditioning, flooring, etc.

Needs a new roof and central air installed.

Central heat & air.