Maybe it is part of the liability piece of it they are now concerned with; it seems something else is at work in this now.

Have you tested the stain on a sample piece of the same material as the floor?

As far as estimate goes, for smaller job, I know small (most likely single operator) specialized contractors usually just do it either on a piece of paper, or carbon-copy setup - all hand written. 

But I can definitely appreciate that the variability is in the approximation of rehab costs as each investor would put their own unique perspective in on that piece of the deal. 

I know the rules are somewhat different in different states, but when closing on a piece of investment property, do you use an attorney or title company?

@Eric BowlinThanks for the input.Some of the reasons you mentioned are the reason I use it now as a supplement.Normally, there would be a dozen of two of 8.5"x11" pieces of paper with detailed information, floor plan and inside photos, as well as web address for additional photo, my phone number, email etc...all on one single page.The problem is when that runs out...I put the box up first day all the papers are gone, probably from nosy neighbors walking by, so the QR code is a backup, it's better than an empty box.Obviously it's only for those who drives by, those who found the place on the web already have the web address and relevant information.As far as popularity goes, I guess my experience is a bit different.A recent quick survey I did at a party and a picnic, most of the younger kids, by that I mean teens and in the twenties have QR code reader apps on their phones, there is no need to download an app. 

I would say that would help from a liability stand point and a way to get a piece of all ends of the deal.  

You can roll over the gain from one piece of investment real estate to another to another and another.

The Tile just provides a wow factor that the 3 piece unit can not bring.

I have a Zombie Mortgage on a piece of property that went through foreclosure all the way to final judgment in 2012.