What an appalling idea.
There's no way I would be happy sharing the garden with my next door neighbours kids who seem to scream and cry all the time.
Although, if you have to book to use the garden I suppose we wouldn't be out there at the same time.
So on a lovely summer's day when I've booked the garden her children wouldn't be able to use it I assume. How bloody stupid.
So what would happen about all the children's swings and toys that they leave out all the time. Would they have to take them in so that other people could have the garden free of them.
Also I have a dog who loves to be out in the garden every day. And needs the garden to wee/poo in. Although, I clean it up immediately, I can't see my neighbours being happy with that, I wouldn't be if I had children.
The main reason I bought a house and not a flat was because I needed a closed in garden for the dog and I like the privacy that a fence allows.
I live in a new build estate and the front gardens are all open plan. Some people have put fences up or high hedges but none of the children play in the front gardens. I imagine like me people like their private space.
Really can't see that catching on.