The following discussion is just on Cargo Containers.Only if you have cheap/extra land and can do rock roads (if you have to have concrete/asphalt roads, you need a higher return unit).If your in the country and your zoning allows it, go with 20 foot Cargo containers as a good part of your mix.

I had a roofing company come out and estimate the cost to repair/replace the roof, immediately the salesperson started stating that the roof was incorrectly installed and that he could see there were three layers (cedar shake, then some asphalt, and finally the current top we can see)He said regardless of what we do; we have to pull it back, lay plywood down and then put the new roof on and that there is about $70k of work.

If you believe a small strip of asphalt in the back of the property it will create three or four parking spaces.

If I did it the way they have the plans drawn up, it would change the lot from a nice, green rural feel to more of an asphalt jungle feel, and the parking is far away from the units, in my opinion.

Just today I was working on a house that has it and it is the asphalt shingle type that looks like brick.

Rolled asphalt.  

I want to get into REI and I see a lot of posts that say, "Oh yeah, getting into wholesaling is a great way to learn REI" So if I'm wanting to start getting into REI now, I can see where it would be beneficial to me to star evaluating property and pounding the pavement, but once I find a good deal, why wouldn't I just do the deal myself if it's such a good deal?

I believe there is a wooden roof underneath and they put Asphalt over it..

Although no leaks were spotted, he said that because my roof is at least 15 years old (not sure of the exact age), the asphalt shingles are rough (petrifying) and suffering heavy granular loss.

Hit the pavement, make some calls, but don't overlook working with a local broker who has access to all available multifamily listings.