Sharing space

I posted the following as a comment on Ian Matthew's blog: I think the idea of having some private and some shared space is well worth investigating - bedrooms, bathroom and a relaxing room (lounge or whatever) as important but kitchen, utilities room, garden, dining room could be shared.  

The other idea is kind of Eden project style but having enough Christians in a street to make a difference. I live in a square with 33 other houses, how many more Christian families would it take to 'tip' the balance, affect the dynamic of the square, the events that take place, the atmosphere? On evidence so far, more than 1! It also allows for sharing because we're in proximity to each other but not in each others pockets. What do you think?