They just have a shell metal building so it's not all that expensive for them to move and rebuild.Also, find a metro area that has very high population and job growth then find out which directions they are growing (usually easy to see by where there's a lot of construction).

Maybe one of the prefab metal buildings? 

A couple of Hayward idiosyncrasies: Until last year, they required metallic pipes and traps under all sinks. 

If they have not met all your criteria (perhaps income) you can consider higher security deposit, or other evidence of ability to pay, to offset that.  

I have a separate metal box located near my front entrance where they put the rent.

They may have added a metal building.

I installed this for under$10 a square and has worked out well https://www.biggerpockets.com/forums/67/topics/229...This is a great cheap/easy way to do it, especially with the metal edging on the sides.

It is sometimes used as a re-application on metal roofs as well.The aluminium increases the reflective value of the roof and offers some protection towards the inevitable UV toll on the rolled roof.  

Broke my foot, got metal shavings in my eye, broken a ton of fingers, got burned every which way and still made it happen.

There's numerous issues; hole in floor and hole in wall, outdated kitchen, ceiling tile is coming off in portions, metal roof that screws need to be replaced etc...