When a policy is based on Replacement Cost (RC), the companies generally will not pay the Replacement cost until the work is completed. 

I see a drop down tile or two that needs to be replaced due to a possible leak that needs to be fixed.

And what if a section of flooring, or a countertop, or some other item in the house just needs a good clean instead of needing to be replaced?

There is no replacement for looking up the city zoning code and seeing what it says.

In my line of work we look for things that will need to be replaced in business or property regularly so I was curious on how you viewed that expense.

No leaks but I'm sure a house inspector will tell buyers that they will need to replace the roof sooner rather than later.

I need to replace the roof on a few of my rentals. 

Being new and conservative I put in cap ex to replace AC and Water heater within next 3 years ($1500 cap ex, $500 maintenance per year.) 

We have also had to replace both the furnaces, replace some windows, and pay for basic repairs and maintenance items. 

My aspirations in real estate is to promote a comfortable steady income where I'll be able to replace my "JOB" in having more time to enjoy and do more things with my family more consistently.