These already exist in every healthy neighborhood. They may operate out of a cafe, a church, many kitchen tables. It is an open question whether ecological sustainable development will be fostered by formalizing these associations into Cooperatives (Co-ops).
At their best these will mirror innovations from Stafford Beer's Control Room, Jönköping's Qulturum, and Toyota's Obeya Room.
Some neighborhoods will want to increase the scope of cooperation beyond the purely informal setting. There are examples of domain specific neighborhood level development cooperatives. The pattern needs sharing.