Co-ownership involves entering into contracts with significant financial commitments. Even if you plan to DIY many other aspects of your intentional community, setting up legally enforceable co-ownership structures and agreements is something you will need a lawyer for.
Lawyers traditionally have a duty of confidentiality, which means they can’t share their clients’ information with other people, and a duty to work in their client’s interest. However, lawyers traditionally only have one person as their client, not a group - because if people within the group have interests that conflict with each other (for example, one person wants the group to have veto power over new owners, and another doesn’t), the lawyer couldn’t represent both sides fairly.
If you do choose to have an attorney jointly represent your group (for example, in drawing up an co-ownership agreement or LLC document, or acting as an official mediator), it’s important to understand that the lawyer is not your personal lawyer. They’re the lawyer for your group, and will act in the interests of the whole group. If you tell your lawyer a piece of confidential information, they do not have to keep that a secret from the rest of the group. It’s recommended to put in the agreement that any member has a right to go to a separate attorney, to make it clear that the attorney is not your personal attorney but jointly representing the group.