Bob's right about JTWROS. I was thinking that, as two individuals, it was TIC, and forgot some of the earlier details.

There is nothing hard or unusual about this, other than, you would strip out everything that does not apply.

Example:

You and I are not related. We are roommates, and buy a house together. As JTWROS, when one of us dies, the whole thing belongs to the other person. As Tenants in Common (more typical for unrelated parties), the one who dies has half-a-house in their estate, and now the one who did not die owns a house together with someone elses' parent/sibling/child/friend, because we didn't think this through.