Like they have for PVC (40 and etc.)Its not schedule , its rated by pressure , you DONT want the 100 PSI poly , thats for irrigation laterals 

Most companies won't do pressure tests anymore since they can make a leaky tank worse.

You mention speaking with the tenants to gauge willingness and needs for move-out - do you mean before or after closing on the property?

Sometimes peer pressure is a good thing.....I wish you well in your real estate endeavor! 

You may want to put a pressure regulating valve in and adjust it until the shower is obvious.I usually  increase our rents 3-5% more if someone leaves.

number, hot off the press, literally I derived this today: when your net monthly cashflow from the rental portfolio is 2.5x your personal monthly debt obligations, which is the summation of your personal SFR home PITI plus all consumer debt obligations, you should be able to quit your job and continue to get financed, providing you are purchasing/refinancing cashflow positive 1-4 unit residential real estate.Since this is relatively new and just derived today, I'd be super open to people pressure-testing it by throwing scenarios out there for the other mortgage professionals and I to play with, or to folks trying to find ones that pass the Mason Rule test, but that do not actually work. 

Less downward pressure during bad economic times.

My services are tailor-made for my investor partners and the system I use makes it a lot easier to simulate several scenarios, gauge heat maps, grants/initiatives within overlays, ward councilors or selectmen, liens/title etc...There's so much data that you literally have to tell me what you want to know or what you only want to see because the rest will just be noise.

My understanding is they will pressure on the borrower and maybe work with him to setup a payment plan.

Yes, I do want to be cautious about building costs and would like to have a good gauge before I actually buy such a lot.