I understand it that it may not be necessary, But is it detrimental in any way?  

i.e. breaking out the property in to its individual core components for depreciation, which allows shorter schedules than the standard 27.5 years.

It is possible for the plumbing work be a component of "A."

." - NationwideIf the renters insurance does not have the liability component, then yes it only covers their belonging, however if it does have a liability component, then it does cover other damages where the insured is found guilty or liability of damages, such as a fire, or water damage. 

Solar certainly isn't at 1-2 year payback, but payback is only one component. 

But it also has an emotional component. 

A well-planned exit strategy is a key component of successful real estate investing.

You need to be able to replace the different components of the property that depreciate over time.

You'll also want to allow for a higher than normal capital expenditure reserve due to the older building components (unless you do major rehab up front).

The most you should tackle would be for you to be a "general contractor" and hire out the various components on something like a carpet and paint rehab.