can you explain how that affects whether/how to get him to move out.
MY RESPONSE: He doesn't have to move out. You married a scammer, and that's your fault. However, the law says, for so long as husband and wife or registered domestic partners are living together, they owe each other a mutual duty of support. [Ca Fam § 4300--"Subject to this division (Ca Fam § 3500 et seq.), a person shall support the person's spouse"; Marriage of Pendleton & Fireman (2000) 24 Cal.4th 39, 52, 99 Cal.Rptr.2d 278, 288; see also Borelli v. Brusseau (1993) 12 Cal.App.4th 647, 652, 16 Cal.Rptr.2d 16, 18--"husband and wife assume mutual obligations of support upon marriage"]
The mutual spousal support duty during marriage operates independently of the parties' marital estate or financial circumstances. The parties' respective support obligations "are not conditioned on the existence of community property or income." [Borelli v. Brusseau, supra, 12 Cal.App.4th at 652, 16 Cal.Rptr.2d at 18]
does that mean divorce has to finalize.
MY RESPONSE: Yes. The said "duty" terminates IF he should move out, or upon order of the court; e.g., a final decree of Dissolution.
do i have to prove the lack of appreciation of the house?
MY RESPONSE: He's entitled to half of ALL appreciation since the date of marriage. I know, that's going to be a killer.
i know ca is a com property state. he has agreed in principle that he has no claim on the equity in the house.
MY RESPONSE: "In principle"? Believe me, the "principle" will change when you don't give him his half. Of course, all debts incurred since marriage will also be shared. So, you'll be able to subtract his half of the debts from what you owe him from your home. Then, you'll be on the hook for everything left over.
Here's a hint: Keep all credit cards out of his hands and try to keep him on a short leash. In the meantime, you'll be expected to house him and feed him.
IAAL