A qualified electrician should evaluate and make repairs as necessary.10) Non-metallic sheathed wiring is routed into main electrical panel and is exposed.

And they only move in after all funds are received/cleared, utilities are set up, and they've met all the other requirements.

I just put two new AC compressors and A-coils into two new rentals since the existings units were in pretty bad shape and I didn't want to worry about them going down soon. 

I would schedule a maintenance, clean the coils, blower, and give it a tune up since you are flipping.

Similar kitchen addition where we put in two metal L beams from party wall to party wall  

You would have to recycle so much metal, which could also be a good thing.

Most are metal on metal and are not appealing to look at.Market rent tops out around $550-$600 and lot rents range from $150 (all three surrounding parks) and $190 (my park)My park has a history of poor management and just recently has started cleaning out the bad tenants. 

We make metal fly (airplanes), we make concrete float (racing canoes).. dude, don't underestimate the power of a solid engineer my fellow wizard.But know your place.

I've called every scrap metal company in the area and no one has answered their phone.

Even as I was closing seems like values were creeping up (I actually ended up appraising higher than acquired price...I could even wholesale to the tune of $12-20k if I wanted, but I found a place that met all 3 of my criteria for getting out there someday, so I'll likely keep it).Also, Leasehold, yes, as has already been pointed out, your buying a house only on a property that has a lease with a term.