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First and foremost on my list is positive cash flow (not heavily reliant on an appreciation play).

He was featured on podcast 37.  

Here's my favorite (because I am featured in it):http://www.biggerpockets.com/renewsblog/2014/04/10...Also, here's a good resource to help you analyze multi family apartments:http://www.biggerpockets.com/files/user/Mister4clo...Lastly, if you want to become a full-time real estate investor someday, you may want to follow my journey...

I agree with Rachel, you cannot rely on Zestimate unless all features are the same.

Knock out for more features/neighborhoods/repairs you want or don't want until you get down to 20 or so and what have you got?

I would imagine this is a little confusing since I am guessing they bounce some program features from one or more different departments.  

For example, on a recent project, one potential investor asked about the reasonableness of comps, and the sponsor provided a 500-word response the same afternoon, detailing the special house features unavailable elsewhere in the neighborhood, the growth of the neighborhood versus others nearby, and six more comps of nearby sales.

Those who stay year-round are usually low-paid tourist workers who, first and foremost, need a cheap place to live.

Here are a couple of my favorite articles about the city:http://m.metrotimes.com/news/news-features/detroit-s-real-estate-market-sees-rebound-1.1580633http://www.forbes.com/sites/realtorcom/2012/06/14/detroit-real-estate-comeback-kid/