The siding is metal.

We all know of new paint and new floors, but sometimes small details go a long way.Some examples are:Outstanding welcoming front door - nothing will increase your curb appeal more than a fantastic solid front door.Brand new metal mailbox - a dented and scratched mailbox screams 'run down' a new box is inexpensive and a metal one will shine in the sunlight and make the property glimmer.New outlet covers - they cost pennies and can update the feel of a room.Updated taps in all baths - we all can pin point baths from the 70's or 80's simply by the tap designs. 

That looks like a plastic bumper over a metal frame.

Like the saying says "One persons trash is another persons treasures".

I decided to get an inspection on both properties pre drywall and my inspector found several issues from warped roof trusses, all steps un-level, damaged metal wall framing, un-level flooring and un-level concrete flooring.

I agree it's like the hidden treasure of America. 

Metal roofs.

It will help you get up to speed faster with the local market than others who do not have access to the treasure trove of info that is on the MLS.

Kevin Schulte the POH are worth about $1000 each in scrap metal :) Any homes that I buy to replace them will obviously have some minimal resale value, but I don't know that I would give them away to tenants to charge $200 lot vs $600 for the POH.

I emailed the Los Angeles county treasurer and tax collector office to gather some leads I was hoping I would get property addresses.