Buffalo changes very quickly block to block (not just ZIP by ZIP) and it is crucial that you understand this prior to writing any checks. 

How do you prove the change?

Withoutknowing the details I can not suggest which would be right to add on.Several you should pay attention to are:- Ordinance & Law: Provides additional building coverage to deal with rebuilding costIncreases due to changes in Zoning or Building laws- Personal Injury Liability: Libel, defamation of character, wrongful imprisonment, etc.

Can't change Detroit if we aren't being the change, right?

Evaluate the situation to see if you could have done anything differently to mitigate the loss and implement changes to your processes, but know that this happens and hoepfully just not too close together. 

Has anyone ever had success doing this?

@Christopher Leet did you ever find an investment realtor in the Columbia area?

This is a straightforward and common approach.However, make sure to document the change in the lease renewal or addendum, specifying the new security deposit amount.

This is the BEST $100 you will ever spend, and if you listen to Amanda Han's tax book, you'll know it's also likely a business expense for you to write off :) https://biggerpockets.supercast.com/My perfect way to learn from the BP books is to listen to the audio book through the subscription above, then books that really stand out to me I go old school and get the physical copy so that I can re-read it, take notes in the margins, and put post it notes so key points are easier for me to re-reference in the future.

I currently work in the turnkey investment world helping investors create a real estate portfolio, if you are ever interested in trading different strategies and goals, I'd love to connect!