On new construction everything needs to be looked at.
Even after the house has "passed" all the County inspections and is ready to be turned over to the buyer.
This is the water main servicing this house.
Above it is the pressure-reduction valve and the two pipes that will service the outdoor hose bibs.
In the winter it is important to turn off the water supplying the outdoor hose bibs.
Those shut-off valves are indoors.
Turning them off inside, opening the hose bibs outside, and loosening the air-bleeder valve, will eliminate the water in the pipes.
That way the plumbing can freeze, but without water pressure it will not expand and break, leaking when the thaw comes.
In new construction, typically, these shut-off valves are near the water main. They can be elsewhere too, but typically you would see them on the tubing above that supporting 2x4.
Searching elsewhere they were not found.
Many home buyers, especially first-time home buyers, do not know about winterizing pipes and would not think to look for these valves.
As I said, on new construction everything needs to be inspected.
And investigate it all carefully, even if the building supervisor has been looking at things for many weeks and the County has signed off on the system!
My recommendation: an independent home inspection, another set of eyes, is essential on new construction! And look everywhere! You never know what might be missing!
Jay Markanich Real Estate Inspections, LLC
Based in Bristow, serving all of Northern Virginia.
Office (703) 330-6388 Cell (703) 585-7560