On the other hand a buy and hold or cash flow real estate investor would have a hard time reaching that return year over year, but in the long hall if he bought wisely and got himself from underneath your very expensive hard money terms he may see high double or even triple digit returns.

It looks like soil/grass so you need a minimum of 2% slope around the house so all water drains away.

No permanent glue required, and it does not require underlayment to be used underneath it.

You can have one holding LLC and underneath it many other LLC for different properties.Anderson advisors can help you with the LLC part.For the banking part, you can just take an appt with a Chase business banker and set up the business bank accounts

There is no direct support underneath the rim of that structure other than the two posts at the stairs so your point load is transferring to the ground only through those two posts, the stair connection and whatever fasteners are holding the ledger board in place.

The house had insulation underneath, but some of it was missing. 

i googled it & looks like soil mites & looks like they're harmless?

However, the subfloor runs underneath the walls.  

ElsaPS - To rotate your picture, go under your profile, than profile picture and use the arrow buttons underneath your photo to rotate it.

I gave The quotes I was getting were in a broad range but most of them said it would likely be closer to the $14K mark based on soil conditions of the area (all clay).