The City of Detroit is block-by-block in many Class B & C areas.In our opinion, zip codes cover too large an area.We use Detroit Neighborhoods, which are much smaller than zip codes.

Is it class A/B/C, B+ or B-? 

I guess Air BnB is the newest hot topic.. nice southern gentlemen.. can't comment on his class or anything like that since I have not sat through it..

Are these Class C zip codes?  

They were a law firm who hunts class action suits to go against companies. 

That would almost always be from the same lender who has a 1st AND 2nd on the property and they are just fed up with the owner and are taking the opportunity to get out of a bad situation entirely.Sorry, it's complex enough that it isn't a 15 minute class.

Or in your case, maybe even change classes of property and use what's known as a consolidation exchange to combine the sales into a larger asset like a multi-family or commercial property.

You need to target upper middle class, second or third time home buyers, to get the best profits in a spec.

https://www.nyc.gov/site/dep/environment/noise-code.page@Nathan Gesner is spot on.

You can find a duplex in a C-class neighborhood for about $210k+.