Most are non bank lenders nowadays which sell them off to Wall Street.

I didn't read that text wall, but Innago.

Each is about the size of a large plastic container or shopping cart, and they mount right to the wall.

The house was a hoarder house and needed a large amount of work (Roof including plywood, facia boards, soffit, gutters, underground plumbing, outdoor deck, all windows, doors, flooring, bathrooms, half the sheetrock, retaining walls, etc.)

You can do this without grab bars and its better than no ADA access...you could also include blocking in the wall for grab bars without installing them now. 

Does the design change load bearing walls?

Anything that can be hung on, swung from, or ripped off the wall should be removed.

Assets identified in this study include:Appliances: Oven/range, dishwasher, refrigerator, washer/dryer, microwaveElectrical and communication systems: TV connections and dedicated equipment outletsCabinetry and CountertopsDecorative light fixtures: Sconces, pendant fixtures, chandeliersInterior Finishes: Crown molding, wood panel wall covering, window treatments8.20% of the total depreciable basis was classified as 15-year class life.

PSJaron Walling, loved your opening comment, "You should praise the Lord...You should praise the Lord You should praise the Lord

Is that less desirable than a property with 5 bedrooms with walls, but less convertible entertaining space that could be used for movies, gaming,etc?