The best you can do is place a detailed at to try to reduce the amount of unnecessary calls but screening out the good from the bad is completely different tool.

.,) and unnecessary exposures (legal, security etc.,).

The other overage sources were: plumbing (most of the lines had to be replaced), roof/siding (we used a high quality company and paid for it), drywall (we decided mid-project to raise the ceilings in 2 rooms) and “misc carpentry/trim” ( all the extra time we paid his crew members given we expanded the scope).One of the more unnecessary (ok, dumb) things I did was pay his crew hourly.

It's inconvenient for the tenants and an unnecessary expense.

Even if they didn't actually enforce that clause, it is there and would give them the ability to claim against it and therefore could at minimum result in unnecessary back and forth to resolve potential problems.

Until you see the property and decide if it is for you this extra research is probably unnecessary.

The color on the pages is totally unnecessary so I re-created the guide in a Printer Friendly format.Printer Friendly EPA Mold Guide

It's more protective of your interest, and the PO is unnecessary. 

But dont expose your investment to unnecessary liabilities.

Step 2, Review your household expenses and find ways to either cut unnecessary debits each month.