This code is then entered into your new lock by you, prior to or during the installation.

The suppliers say they are familiar with building codes in the US, but I still imagine there would be a lot of work to ensure code compliance, as well as installing the home on a new foundation, connect to utilities, etc. 

Upgrade appliances, install new countertops, and modernize fixtures wherever you can.

I don't have any idea what it will cost roughly to make the other lot as a living space - right from assigning address, brining in utilities,  plans for the mobile home (3 bed and 2 bath) install, etc.

However my company was hired to install windows on one of her properties and after the work was completed I got nothing but radio silence.

They aren't installing a meth lab, it's a rabbit. 

You could always use those to prove they were smoking up; with that proof you can either move to evict or simply hold security and at least have some sort of proof.If you install a marijuana smoke detector I wouldn't even tell them what it is (aside from a smoke detector) as they might try and disable it.

I have designed, built, and own (very) small scale (500kW) solar farms and in my world, I learned to always look for the word 'exemption' to make sure I'm not wandering in territory that will cripple me financially. 

Install new tar paper, shingles as well as vent as per instructions.If this is the first experience you've had with repairing roofs I would definitely consider having someone do this for you.

We’re getting a small shopping center installed supposedly by the end of the year (Marshall’s, Tractor Supply, Grocery Outlet) plus investments in a second “downtown” strip.