What my question is how much do people look into the 50% rule and the 2% test as in the videos.

@Jean Pierre Jabo having the license gives you a little bit more access to data.

Looking forward to learn and use data analytics for better investing. 

(although I would be quick to believe I just had bad data)

So buy a sample and test it out on a big patch of wall.  

Bonus points if it can be exported to bulk data and allow for breakdowns by studio, 1bd, 2bd, 3bd.Costar has this information but you can only search a single city at a time whereas I am needing to aggregate all at once for analysis.

Plus new huge data center being built a block away. 1950's home moved to its location, where most houses nearby are slab 3-2-2s. 3-1 with an additional 2-1 350 sq ft attic conversion.

This is just one data point but this doesn't seem to make sense to me. 

There is tons of data for crime reports, job growth, population growth, quality of schools, etc.

It's kind of a contingency but not quite, the offer is just for the vacant land and contract would only be executed once ground is fully cleared, inspected, maybe even tested, etc., not before like with a home-sale offer.