They are not listed on the MLS and wholesalers that I've run into do not deal in properties this large.http://www.crainsnewyork.com/article/20160131/REAL_ESTATE/160129828/the-real-estate-flipping-craze-shown-through-four-big-deals-in-brooklyn-and-manhattan

I end up seeing them in flying magazines where they are writing articles etc..

If memory serves me correctly, this is under Article 12 of the statutes.Although I have done a lot of real estate business in Texas, I have never studied the real estate agency laws for Texas.To be absolutely sure, it may be wise for you to contact the Texas Real Estate Commission to get the answer from the source.

There is an article this morning at finance.yahoo.com telling about the post office plans to reduce delivery to individual locations.I would also learn about the paying habits of the government prior to running the final numbers.

Here is an article to give you an idea of what can be looked for to zero in on where one might piggy back on the efforts of cities, and communities within them: http://www.adn.com/2012/12/19/2729598/two-acda-properties-sold-in-mountain.htmlOther good signs to look for include areas where they are building schools, churches, developing parks, beautification projects, and infrastructure projects.

I've also been reading books and articles on hotels and hotel investing, and have been analyzing deals and submitting offers. 

In an article like this: https://www.biggerpockets.com/renewsblog/2014/03/1...The author says "Let’s say you structured the deal such that the investors get 75% of the building and you gave yourself 25% for putting the whole thing together."

I would say you can read this article which should help you determine your stand on which way to go.https://www.biggerpockets.com/renewsblog/2016/07/2...I would say don't rush into anything.  

The majority of threads/articles/etc. pertained to people looking to make a living from buying investment properties rather than those who just wanted one property to use for another business and letting part of the tenants' rent pay the mortgage.

They also try to include articles, pictures, and other "fun" stuff that people like to see on Facebook.