. - Indoor sprinkler plans with hydraulic calculations and manufacturer spec data sheets.

Having it leak while it rains would make me think that the water is getting in through a door gasket or another point on the units jacket.Get a hose up there and check to see where the insulation of the jacket is getting wet.

Those places nickel and dime you because they show up at your door and they don't even have the chords or hoses for the appliance.

If it was your hose you would likely do the same.

The valve/hose unit sounds like a good idea in that it eliminates a potential leak point in the connection to the hose, but of course you're paying for that, and if either component goes the whole thing must be replaced.

Instead of one tiny house why not build something cool like a concrete 6 unit that you can literally take a hose to if someone pukes.

Early on we never supplied washers & dryers, now we supply them because a)we make some money on them, b)tenants are idiots when it comes to hooking them up, c)tenants use cheap materials such as plastic hoses that leak and break, d)tenants dent walls, scrape baseboards, scratch floors, and generally destroy everything in their path removing or bringing in appliances.I've noticed over the years that tenants also expect more of a turn-key setup than in the past.

This is from Jan. 2022I Hi Tom,Apparently Copper is a non-Ferris metal (ok, enough of the misspelled jokes here).Pretty much all you can do is get some bids.On the bright side, they now use shark bite fittings and (what are basically) hoses vs the old soldered copper stuff, so the labor might be less.Make sure they didn't take your water heater and your furnace, because those also can be targets.Good Luck!

Its not turn key its math.. its non appreciating markets and its investor expectation.. you have a CA bias or expectation you can't take it to Memphis.. if your going to go down the mid west rental path you need a way to scale to 10 homes.. you need to know how to find the right deals put in some time and effort to make sure you not getting hosed up front.. and you need to pay these homes off.. 

PEX generally has less joints because you are running reels of hose.