This could possibly not work legally or for any other reason but if its possible I am going for it!

Someone has to have the legal authority to sell, in order for you to buy.  

Colorado saw a decrease in crime with legalization

Unfortunately, this doesn't speak specifically about the HOA facilities.To preface my concern, I know nothing about legal.  

Open to any ideas that are legal and ethical. 

These are actually available from the credit bureaus as marketing data, but they are "credit data" and therefore come with a lot of rules around how they can be legally used.

I am planning to purchase a two-family with a legal attic in Brooklyn.

In terms of legality and contract law, doing anything other than stated terms would be breach.That said, you have to decide if you're going to "follow the law".

Additionally, if you live there for two years, and have good appreciation, you can take up to $200,000 in gains on your home with no tax on it.This article explains it: https://www.nolo.com/legal-encyclopedia/the-250000...Good Luck!

Being in foreclosure has no legal bearing on the deal, except maybe you’re on a clock.