They also had a judgement for money from me.

There has to be a way to do this; otherwise, how are commercial developers able to make accurate judgement calls about what to build...Is there a business opportunity here in developing a tool that can aggregate and provide this level of, what I think to be, basic and fundamental demand analysis?

You need to use your judgement to determine when its appropriate.

Ensure exposed wood is protected from rain with right coating/staining/painting/treatmentFront of house first floor 500PaintElectrical 7500Bring all Units up to codeEntrance 350 a doorReplace entry doors —STEELRemove existing 3-0/6-8 entry door and jambs and replace with new 20-gauge steel unit, including a clear, dual-pane half-glass panel, jambs, and aluminum threshold with composite stop.

Make sure your GC has all the necessary licensing he/her needs for your area, make sure they don't have any judgements against them(ie owe people money or have taken off with money)Set up progress payments with detailed expectations - For example, 20% will get paid after rough in is completed and so on. 

Wind and rain fifth day.

I forgot to mention that it was raining inside the sunroom on the day I closed.

If your leasing to people that have no fear of collections, judgement or garnishment, well ya better be johnny-on-the-spot with enforcement actions to mitigate loss exposure, and know you will be paying some water bills.     

(once where a fridge leaked water in an adjacent kitchen and once when tenants left a door open during a heavy rain.)So how durable is lvt in the floating plank variety?

The tenants got a judgement and forced the sale of the property.