Does anyone have advice as to how far away to stay from specific addresses that signify past permits to fix sinkhole, or potential ground settlement, issues.

Include copies of the liens if you have them and the cost it will take to rectify the landscaping and tear down the un-permitted patio if its unsafe as well as other key house components that might not be obvious.

I'd look for something without such a funky original layout, lol (the addition we added for the new kitchen tacked significant time onto the project, waiting for the winter weather to break so we could dig the foundation, permits, inspections, etc.Also, I financed it via a local HML. 

Are you talking about a little metal shed you can buy for a few hundred dollars and build yourself, or are you talking about an actual structure with a foundation (a structure you'd have to get a permit to build)? 

. $50k for a complete rehab thats done on time, on budget, includes appliances, and looks professional all while pulling permits?

In Oregon for instance one city ban's nightly rentals  No Air BnB  you must have a permit to do this and they only give out a small hand full.This also illustrates clearly that when you buy rentals that are going to be section 8 your property is what it is and will never really go anywhere as for good bad or indifferent you are on the face lower the perception and reality of the area... so when you look at what's happened in the last 20 years were rental business has exploded into mom and pops you have whole sections of towns and cities that will go through and have gone through exactly what this article describes.The only time this reverses is if like this property its a big complex and the owners have the right to do this... or if its SFR in an area of a city that is regentrifing @Ben Leybovich  watching the move Thomas Crown Affair when I was on the stair master and the lead female ( Rene Russo) character was born and raised in Lima Ohio... how random is that.

When we acquire a new property where smoking has been permitted, we establish a sunset date after which the property (not just inside) will be smoke free.  

The letter would have to include a few bullets, for example:Dear Residents:In order to provide a safe and comfortable environment for all tenants, the following rules will be enforced:•Loitering outside the building is not permitted.

This is what I think you were referring to when you said "Metrics" Here are some ideas, populations growth and forecast growth, Permits issued, new employers coming to the area, Rent vs price ratios, rent vs income ratios, Price vs income ratios, home affordability index.So how do you predict the next significant downturn.

Here is pretty much the run down of what you will need to know for each one: How many spaces is the park currently permitted for?