I want to know where further to train the model and how further of a use it could be for deals, whether marketing, analysis, financing, design and so forth since for a penny you basically can a junior employee that can copy your work methodologies. 

It could also mean somebody wrote their tax check and mistakenly shorted the taxes by $50.00 and the lien is being sold.My methodology is to scrape all the parcels indicated on the aerial shot from the county website.  

There are some people who are very well known in this niche and who offer coaching courses on their methodologies.

I hope to be able to get more information about their methodology, but I don't expect I'll receive it. 

Specifically asset valuation methodology.  

Since the property is vacant and has no NOI, how would you go about putting together a valuation methodology to decide if it's even worth investigating?

I have used three different analysis methodologies for determining the right price to pay for this property.

As a fellow PM, we know there is never a perfect way to run a project, different tactics, tools, and methodology are required every time.

There is a post here http://www.zillow.com/research/zillow-home-value-forecast-methodology-2-3740/

Now they've given up and just use the county assessor.We could have a whole new discussion about assessor methodology and why that's very problematic as well.Thanks for the post @Steve Theobald