What documents are needed for me to claim this on my taxes? 

I went ahead and listed out the claimed details from Khron to add some context to my question.  

Your mortgage is neither inter-bank, nor is it short term.Anyone claiming to be able to predict the future of mortgage rates with >60% accuracy, you should ask them why they aren't on Wall Street sipping champagne with Warren Buffett and netting one billion dollars per year.

If he doesn't pay, take him to small claims court or just figure protecting your investment was worth another $600.

I have considered taking title company to small claims court since they provided me the documentation and or the previous owners.BTW, the roofing contractor has turned into ghost and doesn’t respond to anything.Maybe I should just let it go and just take the minor loss and chalk it up to experience.What would you advise?

The claims of turnkey salesmen?

I talk in terms of Gross Salary, of course with write-offs and deductions we claim/make less. 

Worst case scenario I can imagine without having it would be something like your tenant burns the house down, maybe somebody dies in the fire, maybe not..but in any event, you file an insurance claim and the first question the adjuster asks you is "did you have a CO?"

As he mentioned, any additional take home pay will limit his ability to claim real estate losses he already has coming so that would offset part of the investment benefits. 

William and Robert Thomas "claimed" they were business brokers.