If a person (such as an agent) came to a rough neighborhood displaying a "threat," they make themselves subject to any measure taken to be subdued.

Not only do values go down but you are also subject to get shot, robbed, carjacked, etc.

I would appreciate any input on this subject so i can start to form a more clear long term investing goal for myself.Thanks, Jonathan 

make the offer.Put a contingency that the offer is subject to inspection of the buildingOnce the negotiation is opened, understand how to work the "Second Stage Negotiation process.Now that you have the seller's attention, it is up to you to navigate the terms and price.Too many times an agent will list their clients property way too high, saying to the owner "Let's listed higher (higher than you want), we can always come down!" 

When you have a rental property, it becomes classified as a "Public Building" and is subject to a bunch of code requirements.

Owner Financing / Subject-To Deal 4.75% fixed rate. 3bed 2 bath.  

This is indeed a subject that is of significant interest to me.

Building permit(s) and inspection approvals are required for all work that is subject to building codes.

If they really have no assets and are "judgment proof" you can always see if their financial situation changes in the future and try to attach then, subject to the time frames in your local jurisdiction.  

I am currently looking in the 600-700 market and offers are anywhere from 3-5 percent over asking no subjects.