CA Fam Code Section 913

(a)

The separate property of a married person is liable for a debt incurred by the person before or during marriage.

(b)

Except as otherwise provided by statute:

(1)

The separate property of a married person is not liable for a debt incurred by the person’s spouse before or during marriage.

(2)

The joinder or consent of a married person to an encumbrance of community estate property to secure payment of a debt incurred by the person’s spouse does not subject the person’s separate property to liability for the debt unless the person also incurred the debt.