I read an interesting article over at The Tyee (originally published 1/11/06) about three couples who bought a property together.
They speak of the legal agreements arrived at regarding joint ownership, and the financing with "so many names on the title". It turns out that VanCity was the only one who would finance them.
The property is three rowhouses on two city lots, and each couple has their own "townhouse". Their idea seems to be more about community than affordability, but it is an interesting vision towards where this town might go. It seems to me to be an interesting way towards densification, although these are pre-existing homes.
Here is the closing paragraph. It is an interesting read - if you want to check it out for yourself, click the link above.
I highly recommend the leap of faith necessary to create this type of arrangement. To create a more caring and healthy society, I think we need to make this leap more often in our communities. We are not hippies, but we crave a place where neighbours know each other well and aren't afraid to lean on each other. We all need both privacy and community, and with so few places in the city where the two coexist so brilliantly, we have created an ideal place to live, to grow and thrive, to watch the seasons come and go, to witness our children grow together.