<<Disclaimer: Verify this information before applying it to your situation.>>
I've created a web page for those of us who are looking for shared
housing situations, and would like to find roommates (or housemates) who
are also on a GF diet:
http://www.thirdperson.com/gf/roommates.html
Instructions for contributing are on the page itself. It's free, and
it's open to anyone, anywhere, who follows a GF diet.
Of course, it's pretty unstructured for now - i.e. there are no postings
yet - but I hope that will change soon. :)
Eleanor