We paint a unit with all the prep and two coats for half the price of a month's rent.

Putting it all in is basic handyman work, should cost you maybe a hundred each in any market in the USA.The slope on the garage floor is right for an external carport, the epoxy coating doesn't look like something that will react badly to UV exposure like the popular Rust-oleum RockSolid flooring kits, the light fixture looks rated for external use, but I'd still put those doors in within a month or two.You're doing good, Mark.

Tenants love it and I use extra thick coats of dark stain if there is a lot of discoloration and damage and always double or triple up on the coats of varnish so that it can withstand a beating.

A fresh coat of paint can do wonders, updating hardware on cabinets can be inexpensive and make a big difference.Make a list of what NEEDS to be done and how much it would cost. 

I know there's special paint or coatings you can apply but that can be pricey per gallon.

At best, coating the inside is going to keep it in the concrete.

And there is also something to be said for having other investors chasing your coat tails rather than the other way around!

Typical coat and seal to fix foundation leaks is a foundation company.Sounds like you had 4 days of on incredible rain and a small crack or poor drainage allowed some water to get in.No legal advice

To match the other walls in the room, I would suggest skim coating the cement wall with drywall mud and then texturing.

VA guidelines require that “The surface requiring treatment must be thoroughly washed, scraped, wirebrushed or otherwise cleaned to remove all cracking, scaling, peeling, chipping and loose paint and then repainted with two coats of a suitable nonleaded paint, or:The paint shall be completely removed or the surface covered with a suitable material such as gypsum wallboard, plywood or plaster before any painting is undertaken if the paint film integrity of the surface needing treatment cannot be maintained.”