I didn't check the permits but wish I had done so because it came to my attention during the CO inspection that the property had a bunch of code violations. 

I have read about driving around to look for houses and mailing letters to people in a certain zip code (I am not going to do that.)

I would read the Texas Property Code regarding rentals. 

Building inspector says can be brought up to code.  

Also, you may (consult with at least one qualified professinoal) make the LLC look like an alter-ego in my opinion. 

I feel like I have plenty of cause, but unsure of how to proceed lawfully so I'm not hit with cancellation fees and lose my deposit.The door locks are not consistent with property code; locking knob, keyed deadbolt & blind deadbolt.

ESRI has great data about zip codes and the wealth of each. 

(b) (1) Except as provided in paragraph (2), this division shall not apply to a depository institution, as defined in Section 1420, a person licensed pursuant to Division 9 (commencing with Section 22000) or Division 20 (commencing with Section 50000), a person licensed pursuant to Part 1 (commencing with Section 10000) of Division 4 of the Business and Professions Code, a person who is subject to the Karnette Rental-Purchase Act (Title 2.96 (commencing with Section 1812.620) of Part 4 of Division 3 of the Civil Code), or a trustee performing acts in connection with a nonjudicial foreclosure pursuant to Article 1 (commencing with Section 2920) of Chapter 2 of Title 14 of Part 4 of Division 3 of the Civil Code.

They need to put them into the correct GL code (or the right property if they manage more than one).   

Besides the architecture/construction considerations (building code, finding a contractor that know how to work with containers, etc), does anyone has any experience with these, specifically in terms of financing and insurance?