Can't you turn it off at the meter outside?
An interesting idea. The water supply for our house and next door runs round the back of the nextdoor house where it splits.
The stopcock in the street works but cuts off water to both houses.
The stopcock in the neighbours back yard doesn't turn and is currently inaccessible due to a paving slab on top of it.
If I turn the water off in the street then I have all the water in his rising main, my other rising main (the water comes in in two places..) to deal with. Just freezing the pipe gives me a small amount of 15mm pipe (to the dishwasher and sink) to deal with.
So freezing appears to be the better option.
..d