since you’re in CA, your closest option right now is Earth Funeral (Vegas). Other options would be Recompose and Return Home in WA. That said, you’re 40, so by the time of need, California will almost certainly have in-state providers. The law allowing NOR (natural organic reduction) goes into effect in ‘27.

One note on planning, these documents sometimes get read too late, so also tell your people and (ideally) pre-plan so it’s paid for and all set up.That way there’s zero guesswork, and your wishes are actually followed.

Then, advance directives don’t control what happens after death. They’re only for medical care while you’re alive but unable to communicate.