My house has no apparent main water line shut off valve. Usually one would find a shut off valve right near where the water main entered the house structure. At my current house I have never been able to determine where the water main entry point is located.
I have a house that has a lower level that is on a slab level with my garage. The other 2/3 or the house is built over a crawl space. I have checked the crawl space and found no water line entry points there. It is not possible to see where the water lines are routed in my house because they are all embedded in walls and ceilings that are covered over with drywall. Even my garage area, furnace area, water heater area and laundry room are all finished over with drywall. Thus I have no idea where the source point for my water lines is located.
It is possible the water main comes up through the slab of the lower level of the house and immediately goes up into a wall where it is hidden away from view. It is equally possible that the line enters below ground level at the periphery of the house and not findable unless I decided to dig a deep moat all around my house.
Currently if I want to shut off all the water in my house I have to use a T-bar handle to shut it off by the street near the water meter. This would be a less than ideal situation in the case of a water leak emergency. It is just not feasible to expect family members to be able to find the T-bar handle and run out to the street to turn off the water. For this reason I want to find the water main entry point and install a proper shut-off valve.
I am looking for suggestions about how to go about finding the water main entry point to the house. And hopefully there is a suitable method that works without having to rip down tons of drywall.
* Some Added Comments *
The water meter is out by the street under a concrete cover about six inches from the curb.
The water meter is at the extreme corner of the lot to the side of the driveway away from the house.
The water company's input ends about about six inches over the edge of the curb!!
The house was built in ~1987.