[Cob] Cob contractor or cob house for sale/rent

[iona hawken]

Hi all--
I'm searching for a cob house that's already built that is for rent or sale--and I'm also looking for someone who.m I could hire to build a cob house for me. I understand that the whole purpose is to do it yourself but I want one built ahead of our move, and then we will be building another one ourselves. Or alternatively to rent or buy one. 
Thanks for any leads or information. 
Iona